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| 1 | <?php |
| 2 | /** |
| 3 | * @defgroup FileAbstraction File abstraction |
| 4 | * @ingroup FileRepo |
| 5 | * |
| 6 | * Represents files in a repository. |
| 7 | */ |
| 8 | |
| 9 | use MediaWiki\Config\ConfigException; |
| 10 | use MediaWiki\Context\IContextSource; |
| 11 | use MediaWiki\HookContainer\ProtectedHookAccessorTrait; |
| 12 | use MediaWiki\Linker\LinkTarget; |
| 13 | use MediaWiki\Logger\LoggerFactory; |
| 14 | use MediaWiki\MainConfigNames; |
| 15 | use MediaWiki\MediaWikiServices; |
| 16 | use MediaWiki\Page\PageIdentity; |
| 17 | use MediaWiki\Permissions\Authority; |
| 18 | use MediaWiki\PoolCounter\PoolCounterWorkViaCallback; |
| 19 | use MediaWiki\Status\Status; |
| 20 | use MediaWiki\Title\Title; |
| 21 | use MediaWiki\User\UserIdentity; |
| 22 | |
| 23 | /** |
| 24 | * Base code for files. |
| 25 | * |
| 26 | * This program is free software; you can redistribute it and/or modify |
| 27 | * it under the terms of the GNU General Public License as published by |
| 28 | * the Free Software Foundation; either version 2 of the License, or |
| 29 | * (at your option) any later version. |
| 30 | * |
| 31 | * This program is distributed in the hope that it will be useful, |
| 32 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 33 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 34 | * GNU General Public License for more details. |
| 35 | * |
| 36 | * You should have received a copy of the GNU General Public License along |
| 37 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 38 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 39 | * http://www.gnu.org/copyleft/gpl.html |
| 40 | * |
| 41 | * @file |
| 42 | * @ingroup FileAbstraction |
| 43 | */ |
| 44 | |
| 45 | /** |
| 46 | * Implements some public methods and some protected utility functions which |
| 47 | * are required by multiple child classes. Contains stub functionality for |
| 48 | * unimplemented public methods. |
| 49 | * |
| 50 | * Stub functions which should be overridden are marked with STUB. Some more |
| 51 | * concrete functions are also typically overridden by child classes. |
| 52 | * |
| 53 | * Note that only the repo object knows what its file class is called. You should |
| 54 | * never name a file class explicitly outside of the repo class. Instead use the |
| 55 | * repo's factory functions to generate file objects, for example: |
| 56 | * |
| 57 | * RepoGroup::singleton()->getLocalRepo()->newFile( $title ); |
| 58 | * |
| 59 | * Consider the services container below; |
| 60 | * |
| 61 | * $services = MediaWikiServices::getInstance(); |
| 62 | * |
| 63 | * The convenience services $services->getRepoGroup()->getLocalRepo()->newFile() |
| 64 | * and $services->getRepoGroup()->findFile() should be sufficient in most cases. |
| 65 | * |
| 66 | * @TODO: DI - Instead of using MediaWikiServices::getInstance(), a service should |
| 67 | * ideally accept a RepoGroup in its constructor and then, use $this->repoGroup->findFile() |
| 68 | * and $this->repoGroup->getLocalRepo()->newFile(). |
| 69 | * |
| 70 | * @stable to extend |
| 71 | * @ingroup FileAbstraction |
| 72 | */ |
| 73 | abstract class File implements MediaHandlerState { |
| 74 | use ProtectedHookAccessorTrait; |
| 75 | |
| 76 | // Bitfield values akin to the revision deletion constants |
| 77 | public const DELETED_FILE = 1; |
| 78 | public const DELETED_COMMENT = 2; |
| 79 | public const DELETED_USER = 4; |
| 80 | public const DELETED_RESTRICTED = 8; |
| 81 | |
| 82 | /** Force rendering in the current process */ |
| 83 | public const RENDER_NOW = 1; |
| 84 | /** |
| 85 | * Force rendering even if thumbnail already exist and using RENDER_NOW |
| 86 | * I.e. you have to pass both flags: File::RENDER_NOW | File::RENDER_FORCE |
| 87 | */ |
| 88 | public const RENDER_FORCE = 2; |
| 89 | |
| 90 | public const DELETE_SOURCE = 1; |
| 91 | |
| 92 | // Audience options for File::getDescription() |
| 93 | public const FOR_PUBLIC = 1; |
| 94 | public const FOR_THIS_USER = 2; |
| 95 | public const RAW = 3; |
| 96 | |
| 97 | // Options for File::thumbName() |
| 98 | public const THUMB_FULL_NAME = 1; |
| 99 | |
| 100 | /** |
| 101 | * Some member variables can be lazy-initialised using __get(). The |
| 102 | * initialisation function for these variables is always a function named |
| 103 | * like getVar(), where Var is the variable name with upper-case first |
| 104 | * letter. |
| 105 | * |
| 106 | * The following variables are initialised in this way in this base class: |
| 107 | * name, extension, handler, path, canRender, isSafeFile, |
| 108 | * transformScript, hashPath, pageCount, url |
| 109 | * |
| 110 | * Code within this class should generally use the accessor function |
| 111 | * directly, since __get() isn't re-entrant and therefore causes bugs that |
| 112 | * depend on initialisation order. |
| 113 | */ |
| 114 | |
| 115 | /** |
| 116 | * The following member variables are not lazy-initialised |
| 117 | */ |
| 118 | |
| 119 | /** @var FileRepo|LocalRepo|ForeignAPIRepo|false */ |
| 120 | public $repo; |
| 121 | |
| 122 | /** @var Title|string|false */ |
| 123 | protected $title; |
| 124 | |
| 125 | /** @var string Text of last error */ |
| 126 | protected $lastError; |
| 127 | |
| 128 | /** @var ?string The name that was used to access the file, before |
| 129 | * resolving redirects. Main part of the title, with underscores |
| 130 | * per Title::getDBkey(). |
| 131 | */ |
| 132 | protected $redirected; |
| 133 | |
| 134 | /** @var Title */ |
| 135 | protected $redirectedTitle; |
| 136 | |
| 137 | /** @var FSFile|false False if undefined */ |
| 138 | protected $fsFile; |
| 139 | |
| 140 | /** @var MediaHandler */ |
| 141 | protected $handler; |
| 142 | |
| 143 | /** @var string The URL corresponding to one of the four basic zones */ |
| 144 | protected $url; |
| 145 | |
| 146 | /** @var string File extension */ |
| 147 | protected $extension; |
| 148 | |
| 149 | /** @var string|null The name of a file from its title object */ |
| 150 | protected $name; |
| 151 | |
| 152 | /** @var string The storage path corresponding to one of the zones */ |
| 153 | protected $path; |
| 154 | |
| 155 | /** @var string|null Relative path including trailing slash */ |
| 156 | protected $hashPath; |
| 157 | |
| 158 | /** @var int|false Number of pages of a multipage document, or false for |
| 159 | * documents which aren't multipage documents |
| 160 | */ |
| 161 | protected $pageCount; |
| 162 | |
| 163 | /** @var string|false URL of transformscript (for example thumb.php) */ |
| 164 | protected $transformScript; |
| 165 | |
| 166 | /** @var Title */ |
| 167 | protected $redirectTitle; |
| 168 | |
| 169 | /** @var bool Whether the output of transform() for this file is likely to be valid. */ |
| 170 | protected $canRender; |
| 171 | |
| 172 | /** @var bool Whether this media file is in a format that is unlikely to |
| 173 | * contain viruses or malicious content |
| 174 | */ |
| 175 | protected $isSafeFile; |
| 176 | |
| 177 | /** @var string Required Repository class type */ |
| 178 | protected $repoClass = FileRepo::class; |
| 179 | |
| 180 | /** @var array Cache of tmp filepaths pointing to generated bucket thumbnails, keyed by width */ |
| 181 | protected $tmpBucketedThumbCache = []; |
| 182 | |
| 183 | /** @var array */ |
| 184 | private $handlerState = []; |
| 185 | |
| 186 | /** |
| 187 | * Call this constructor from child classes. |
| 188 | * |
| 189 | * Both $title and $repo are optional, though some functions |
| 190 | * may return false or throw exceptions if they are not set. |
| 191 | * Most subclasses will want to call assertRepoDefined() here. |
| 192 | * |
| 193 | * @stable to call |
| 194 | * @param Title|string|false $title |
| 195 | * @param FileRepo|false $repo |
| 196 | */ |
| 197 | public function __construct( $title, $repo ) { |
| 198 | // Some subclasses do not use $title, but set name/title some other way |
| 199 | if ( $title !== false ) { |
| 200 | $title = self::normalizeTitle( $title, 'exception' ); |
| 201 | } |
| 202 | $this->title = $title; |
| 203 | $this->repo = $repo; |
| 204 | } |
| 205 | |
| 206 | /** |
| 207 | * Given a string or Title object return either a |
| 208 | * valid Title object with namespace NS_FILE or null |
| 209 | * |
| 210 | * @param PageIdentity|LinkTarget|string $title |
| 211 | * @param string|false $exception Use 'exception' to throw an error on bad titles |
| 212 | * @return Title|null |
| 213 | */ |
| 214 | public static function normalizeTitle( $title, $exception = false ) { |
| 215 | $ret = $title; |
| 216 | |
| 217 | if ( !$ret instanceof Title ) { |
| 218 | if ( $ret instanceof PageIdentity ) { |
| 219 | $ret = Title::castFromPageIdentity( $ret ); |
| 220 | } elseif ( $ret instanceof LinkTarget ) { |
| 221 | $ret = Title::castFromLinkTarget( $ret ); |
| 222 | } |
| 223 | } |
| 224 | |
| 225 | if ( $ret instanceof Title ) { |
| 226 | # Normalize NS_MEDIA -> NS_FILE |
| 227 | if ( $ret->getNamespace() === NS_MEDIA ) { |
| 228 | $ret = Title::makeTitleSafe( NS_FILE, $ret->getDBkey() ); |
| 229 | # Double check the titles namespace |
| 230 | } elseif ( $ret->getNamespace() !== NS_FILE ) { |
| 231 | $ret = null; |
| 232 | } |
| 233 | } else { |
| 234 | # Convert strings to Title objects |
| 235 | $ret = Title::makeTitleSafe( NS_FILE, (string)$ret ); |
| 236 | } |
| 237 | if ( !$ret && $exception !== false ) { |
| 238 | throw new RuntimeException( "`$title` is not a valid file title." ); |
| 239 | } |
| 240 | |
| 241 | return $ret; |
| 242 | } |
| 243 | |
| 244 | public function __get( $name ) { |
| 245 | $function = [ $this, 'get' . ucfirst( $name ) ]; |
| 246 | if ( !is_callable( $function ) ) { |
| 247 | return null; |
| 248 | } else { |
| 249 | $this->$name = $function(); |
| 250 | |
| 251 | return $this->$name; |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | /** |
| 256 | * Normalize a file extension to the common form, making it lowercase and checking some synonyms, |
| 257 | * and ensure it's clean. Extensions with non-alphanumeric characters will be discarded. |
| 258 | * Keep in sync with mw.Title.normalizeExtension() in JS. |
| 259 | * |
| 260 | * @param string $extension File extension (without the leading dot) |
| 261 | * @return string File extension in canonical form |
| 262 | */ |
| 263 | public static function normalizeExtension( $extension ) { |
| 264 | $lower = strtolower( $extension ); |
| 265 | $squish = [ |
| 266 | 'htm' => 'html', |
| 267 | 'jpeg' => 'jpg', |
| 268 | 'mpeg' => 'mpg', |
| 269 | 'tiff' => 'tif', |
| 270 | 'ogv' => 'ogg' ]; |
| 271 | if ( isset( $squish[$lower] ) ) { |
| 272 | return $squish[$lower]; |
| 273 | } elseif ( preg_match( '/^[0-9a-z]+$/', $lower ) ) { |
| 274 | return $lower; |
| 275 | } else { |
| 276 | return ''; |
| 277 | } |
| 278 | } |
| 279 | |
| 280 | /** |
| 281 | * Checks if file extensions are compatible |
| 282 | * |
| 283 | * @param File $old Old file |
| 284 | * @param string $new New name |
| 285 | * |
| 286 | * @return bool|null |
| 287 | */ |
| 288 | public static function checkExtensionCompatibility( File $old, $new ) { |
| 289 | $oldMime = $old->getMimeType(); |
| 290 | $n = strrpos( $new, '.' ); |
| 291 | $newExt = self::normalizeExtension( $n ? substr( $new, $n + 1 ) : '' ); |
| 292 | $mimeMagic = MediaWikiServices::getInstance()->getMimeAnalyzer(); |
| 293 | |
| 294 | return $mimeMagic->isMatchingExtension( $newExt, $oldMime ); |
| 295 | } |
| 296 | |
| 297 | /** |
| 298 | * Upgrade the database row if there is one |
| 299 | * Called by ImagePage |
| 300 | * STUB |
| 301 | * |
| 302 | * @stable to override |
| 303 | */ |
| 304 | public function upgradeRow() { |
| 305 | } |
| 306 | |
| 307 | /** |
| 308 | * Split an internet media type into its two components; if not |
| 309 | * a two-part name, set the minor type to 'unknown'. |
| 310 | * |
| 311 | * @param ?string $mime "text/html" etc |
| 312 | * @return string[] ("text", "html") etc |
| 313 | */ |
| 314 | public static function splitMime( ?string $mime ) { |
| 315 | if ( $mime === null ) { |
| 316 | return [ 'unknown', 'unknown' ]; |
| 317 | } elseif ( str_contains( $mime, '/' ) ) { |
| 318 | return explode( '/', $mime, 2 ); |
| 319 | } else { |
| 320 | return [ $mime, 'unknown' ]; |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | /** |
| 325 | * Callback for usort() to do file sorts by name |
| 326 | * |
| 327 | * @param File $a |
| 328 | * @param File $b |
| 329 | * @return int Result of name comparison |
| 330 | */ |
| 331 | public static function compare( File $a, File $b ) { |
| 332 | return strcmp( $a->getName(), $b->getName() ); |
| 333 | } |
| 334 | |
| 335 | /** |
| 336 | * Return the name of this file |
| 337 | * |
| 338 | * @stable to override |
| 339 | * @return string |
| 340 | */ |
| 341 | public function getName() { |
| 342 | if ( $this->name === null ) { |
| 343 | $this->assertRepoDefined(); |
| 344 | $this->name = $this->repo->getNameFromTitle( $this->title ); |
| 345 | } |
| 346 | |
| 347 | return $this->name; |
| 348 | } |
| 349 | |
| 350 | /** |
| 351 | * Get the file extension, e.g. "svg" |
| 352 | * |
| 353 | * @stable to override |
| 354 | * @return string |
| 355 | */ |
| 356 | public function getExtension() { |
| 357 | if ( !isset( $this->extension ) ) { |
| 358 | $n = strrpos( $this->getName(), '.' ); |
| 359 | $this->extension = self::normalizeExtension( |
| 360 | $n ? substr( $this->getName(), $n + 1 ) : '' ); |
| 361 | } |
| 362 | |
| 363 | return $this->extension; |
| 364 | } |
| 365 | |
| 366 | /** |
| 367 | * Return the associated title object |
| 368 | * |
| 369 | * @return Title |
| 370 | */ |
| 371 | public function getTitle() { |
| 372 | return $this->title; |
| 373 | } |
| 374 | |
| 375 | /** |
| 376 | * Return the title used to find this file |
| 377 | * |
| 378 | * @return Title |
| 379 | */ |
| 380 | public function getOriginalTitle() { |
| 381 | if ( $this->redirected !== null ) { |
| 382 | return $this->getRedirectedTitle(); |
| 383 | } |
| 384 | |
| 385 | return $this->title; |
| 386 | } |
| 387 | |
| 388 | /** |
| 389 | * Return the URL of the file |
| 390 | * @stable to override |
| 391 | * |
| 392 | * @return string |
| 393 | */ |
| 394 | public function getUrl() { |
| 395 | if ( !isset( $this->url ) ) { |
| 396 | $this->assertRepoDefined(); |
| 397 | $ext = $this->getExtension(); |
| 398 | $this->url = $this->repo->getZoneUrl( 'public', $ext ) . '/' . $this->getUrlRel(); |
| 399 | } |
| 400 | |
| 401 | return $this->url; |
| 402 | } |
| 403 | |
| 404 | /** |
| 405 | * Get short description URL for a files based on the page ID |
| 406 | * @stable to override |
| 407 | * |
| 408 | * @return string|null |
| 409 | * @since 1.27 |
| 410 | */ |
| 411 | public function getDescriptionShortUrl() { |
| 412 | return null; |
| 413 | } |
| 414 | |
| 415 | /** |
| 416 | * Return a fully-qualified URL to the file. |
| 417 | * Upload URL paths _may or may not_ be fully qualified, so |
| 418 | * we check. Local paths are assumed to belong on $wgServer. |
| 419 | * @stable to override |
| 420 | * |
| 421 | * @return string |
| 422 | */ |
| 423 | public function getFullUrl() { |
| 424 | return (string)MediaWikiServices::getInstance()->getUrlUtils() |
| 425 | ->expand( $this->getUrl(), PROTO_RELATIVE ); |
| 426 | } |
| 427 | |
| 428 | /** |
| 429 | * @stable to override |
| 430 | * @return string |
| 431 | */ |
| 432 | public function getCanonicalUrl() { |
| 433 | return (string)MediaWikiServices::getInstance()->getUrlUtils() |
| 434 | ->expand( $this->getUrl(), PROTO_CANONICAL ); |
| 435 | } |
| 436 | |
| 437 | /** |
| 438 | * @return string |
| 439 | */ |
| 440 | public function getViewURL() { |
| 441 | if ( $this->mustRender() ) { |
| 442 | if ( $this->canRender() ) { |
| 443 | return $this->createThumb( $this->getWidth() ); |
| 444 | } else { |
| 445 | wfDebug( __METHOD__ . ': supposed to render ' . $this->getName() . |
| 446 | ' (' . $this->getMimeType() . "), but can't!" ); |
| 447 | |
| 448 | return $this->getUrl(); # hm... return NULL? |
| 449 | } |
| 450 | } else { |
| 451 | return $this->getUrl(); |
| 452 | } |
| 453 | } |
| 454 | |
| 455 | /** |
| 456 | * Return the storage path to the file. Note that this does |
| 457 | * not mean that a file actually exists under that location. |
| 458 | * |
| 459 | * This path depends on whether directory hashing is active or not, |
| 460 | * i.e. whether the files are all found in the same directory, |
| 461 | * or in hashed paths like /images/3/3c. |
| 462 | * |
| 463 | * Most callers don't check the return value, but ForeignAPIFile::getPath |
| 464 | * returns false. |
| 465 | * |
| 466 | * @stable to override |
| 467 | * @return string|false ForeignAPIFile::getPath can return false |
| 468 | */ |
| 469 | public function getPath() { |
| 470 | if ( !isset( $this->path ) ) { |
| 471 | $this->assertRepoDefined(); |
| 472 | $this->path = $this->repo->getZonePath( 'public' ) . '/' . $this->getRel(); |
| 473 | } |
| 474 | |
| 475 | return $this->path; |
| 476 | } |
| 477 | |
| 478 | /** |
| 479 | * Get an FS copy or original of this file and return the path. |
| 480 | * Returns false on failure. Callers must not alter the file. |
| 481 | * Temporary files are cleared automatically. |
| 482 | * |
| 483 | * @return string|false False on failure |
| 484 | */ |
| 485 | public function getLocalRefPath() { |
| 486 | $this->assertRepoDefined(); |
| 487 | if ( !isset( $this->fsFile ) ) { |
| 488 | $starttime = microtime( true ); |
| 489 | $this->fsFile = $this->repo->getLocalReference( $this->getPath() ); |
| 490 | |
| 491 | $statTiming = microtime( true ) - $starttime; |
| 492 | MediaWikiServices::getInstance()->getStatsdDataFactory()->timing( |
| 493 | 'media.thumbnail.generate.fetchoriginal', 1000 * $statTiming ); |
| 494 | |
| 495 | if ( !$this->fsFile ) { |
| 496 | $this->fsFile = false; // null => false; cache negative hits |
| 497 | } |
| 498 | } |
| 499 | |
| 500 | return ( $this->fsFile ) |
| 501 | ? $this->fsFile->getPath() |
| 502 | : false; |
| 503 | } |
| 504 | |
| 505 | /** |
| 506 | * Return the width of the image. Returns false if the width is unknown |
| 507 | * or undefined. |
| 508 | * |
| 509 | * STUB |
| 510 | * Overridden by LocalFile, UnregisteredLocalFile |
| 511 | * |
| 512 | * @stable to override |
| 513 | * @param int $page |
| 514 | * @return int|false |
| 515 | */ |
| 516 | public function getWidth( $page = 1 ) { |
| 517 | return false; |
| 518 | } |
| 519 | |
| 520 | /** |
| 521 | * Return the height of the image. Returns false if the height is unknown |
| 522 | * or undefined |
| 523 | * |
| 524 | * STUB |
| 525 | * Overridden by LocalFile, UnregisteredLocalFile |
| 526 | * |
| 527 | * @stable to override |
| 528 | * @param int $page |
| 529 | * @return int|false False on failure |
| 530 | */ |
| 531 | public function getHeight( $page = 1 ) { |
| 532 | return false; |
| 533 | } |
| 534 | |
| 535 | /** |
| 536 | * Return the smallest bucket from $wgThumbnailBuckets which is at least |
| 537 | * $wgThumbnailMinimumBucketDistance larger than $desiredWidth. The returned bucket, if any, |
| 538 | * will always be bigger than $desiredWidth. |
| 539 | * |
| 540 | * @param int $desiredWidth |
| 541 | * @param int $page |
| 542 | * @return int|false |
| 543 | */ |
| 544 | public function getThumbnailBucket( $desiredWidth, $page = 1 ) { |
| 545 | $thumbnailBuckets = MediaWikiServices::getInstance() |
| 546 | ->getMainConfig()->get( MainConfigNames::ThumbnailBuckets ); |
| 547 | $thumbnailMinimumBucketDistance = MediaWikiServices::getInstance() |
| 548 | ->getMainConfig()->get( MainConfigNames::ThumbnailMinimumBucketDistance ); |
| 549 | $imageWidth = $this->getWidth( $page ); |
| 550 | |
| 551 | if ( $imageWidth === false ) { |
| 552 | return false; |
| 553 | } |
| 554 | |
| 555 | if ( $desiredWidth > $imageWidth ) { |
| 556 | return false; |
| 557 | } |
| 558 | |
| 559 | if ( !$thumbnailBuckets ) { |
| 560 | return false; |
| 561 | } |
| 562 | |
| 563 | $sortedBuckets = $thumbnailBuckets; |
| 564 | |
| 565 | sort( $sortedBuckets ); |
| 566 | |
| 567 | foreach ( $sortedBuckets as $bucket ) { |
| 568 | if ( $bucket >= $imageWidth ) { |
| 569 | return false; |
| 570 | } |
| 571 | |
| 572 | if ( $bucket - $thumbnailMinimumBucketDistance > $desiredWidth ) { |
| 573 | return $bucket; |
| 574 | } |
| 575 | } |
| 576 | |
| 577 | // Image is bigger than any available bucket |
| 578 | return false; |
| 579 | } |
| 580 | |
| 581 | /** |
| 582 | * Get the width and height to display image at. |
| 583 | * |
| 584 | * @param int $maxWidth Max width to display at |
| 585 | * @param int $maxHeight Max height to display at |
| 586 | * @param int $page |
| 587 | * @return array Array (width, height) |
| 588 | * @since 1.35 |
| 589 | */ |
| 590 | public function getDisplayWidthHeight( $maxWidth, $maxHeight, $page = 1 ) { |
| 591 | if ( !$maxWidth || !$maxHeight ) { |
| 592 | // should never happen |
| 593 | throw new ConfigException( 'Using a choice from $wgImageLimits that is 0x0' ); |
| 594 | } |
| 595 | |
| 596 | $width = $this->getWidth( $page ); |
| 597 | $height = $this->getHeight( $page ); |
| 598 | if ( !$width || !$height ) { |
| 599 | return [ 0, 0 ]; |
| 600 | } |
| 601 | |
| 602 | // Calculate the thumbnail size. |
| 603 | if ( $width <= $maxWidth && $height <= $maxHeight ) { |
| 604 | // Vectorized image, do nothing. |
| 605 | } elseif ( $width / $height >= $maxWidth / $maxHeight ) { |
| 606 | # The limiting factor is the width, not the height. |
| 607 | $height = round( $height * $maxWidth / $width ); |
| 608 | $width = $maxWidth; |
| 609 | // Note that $height <= $maxHeight now. |
| 610 | } else { |
| 611 | $newwidth = floor( $width * $maxHeight / $height ); |
| 612 | $height = round( $height * $newwidth / $width ); |
| 613 | $width = $newwidth; |
| 614 | // Note that $height <= $maxHeight now, but might not be identical |
| 615 | // because of rounding. |
| 616 | } |
| 617 | return [ $width, $height ]; |
| 618 | } |
| 619 | |
| 620 | /** |
| 621 | * Get the duration of a media file in seconds |
| 622 | * |
| 623 | * @stable to override |
| 624 | * @return float|int |
| 625 | */ |
| 626 | public function getLength() { |
| 627 | $handler = $this->getHandler(); |
| 628 | if ( $handler ) { |
| 629 | return $handler->getLength( $this ); |
| 630 | } else { |
| 631 | return 0; |
| 632 | } |
| 633 | } |
| 634 | |
| 635 | /** |
| 636 | * Return true if the file is vectorized |
| 637 | * |
| 638 | * @return bool |
| 639 | */ |
| 640 | public function isVectorized() { |
| 641 | $handler = $this->getHandler(); |
| 642 | if ( $handler ) { |
| 643 | return $handler->isVectorized( $this ); |
| 644 | } else { |
| 645 | return false; |
| 646 | } |
| 647 | } |
| 648 | |
| 649 | /** |
| 650 | * Gives a (possibly empty) list of IETF languages to render |
| 651 | * the file in. |
| 652 | * |
| 653 | * If the file doesn't have translations, or if the file |
| 654 | * format does not support that sort of thing, returns |
| 655 | * an empty array. |
| 656 | * |
| 657 | * @return string[] |
| 658 | * @since 1.23 |
| 659 | */ |
| 660 | public function getAvailableLanguages() { |
| 661 | $handler = $this->getHandler(); |
| 662 | if ( $handler ) { |
| 663 | return $handler->getAvailableLanguages( $this ); |
| 664 | } else { |
| 665 | return []; |
| 666 | } |
| 667 | } |
| 668 | |
| 669 | /** |
| 670 | * Get the IETF language code from the available languages for this file that matches the language |
| 671 | * requested by the user |
| 672 | * |
| 673 | * @param string $userPreferredLanguage |
| 674 | * @return string|null |
| 675 | */ |
| 676 | public function getMatchedLanguage( $userPreferredLanguage ) { |
| 677 | $handler = $this->getHandler(); |
| 678 | if ( $handler ) { |
| 679 | return $handler->getMatchedLanguage( |
| 680 | $userPreferredLanguage, |
| 681 | $handler->getAvailableLanguages( $this ) |
| 682 | ); |
| 683 | } |
| 684 | |
| 685 | return null; |
| 686 | } |
| 687 | |
| 688 | /** |
| 689 | * In files that support multiple language, what is the default language |
| 690 | * to use if none specified. |
| 691 | * |
| 692 | * @return string|null IETF Lang code, or null if filetype doesn't support multiple languages. |
| 693 | * @since 1.23 |
| 694 | */ |
| 695 | public function getDefaultRenderLanguage() { |
| 696 | $handler = $this->getHandler(); |
| 697 | if ( $handler ) { |
| 698 | return $handler->getDefaultRenderLanguage( $this ); |
| 699 | } else { |
| 700 | return null; |
| 701 | } |
| 702 | } |
| 703 | |
| 704 | /** |
| 705 | * Will the thumbnail be animated if one would expect it to be. |
| 706 | * |
| 707 | * Currently used to add a warning to the image description page |
| 708 | * |
| 709 | * @return bool False if the main image is both animated |
| 710 | * and the thumbnail is not. In all other cases must return |
| 711 | * true. If image is not renderable whatsoever, should |
| 712 | * return true. |
| 713 | */ |
| 714 | public function canAnimateThumbIfAppropriate() { |
| 715 | $handler = $this->getHandler(); |
| 716 | if ( !$handler ) { |
| 717 | // We cannot handle image whatsoever, thus |
| 718 | // one would not expect it to be animated |
| 719 | // so true. |
| 720 | return true; |
| 721 | } |
| 722 | |
| 723 | return !$this->allowInlineDisplay() |
| 724 | // Image is not animated, so one would |
| 725 | // not expect thumb to be |
| 726 | || !$handler->isAnimatedImage( $this ) |
| 727 | // Image is animated, but thumbnail isn't. |
| 728 | // This is unexpected to the user. |
| 729 | || $handler->canAnimateThumbnail( $this ); |
| 730 | } |
| 731 | |
| 732 | /** |
| 733 | * Get handler-specific metadata |
| 734 | * Overridden by LocalFile, UnregisteredLocalFile |
| 735 | * STUB |
| 736 | * @deprecated since 1.37 use getMetadataArray() or getMetadataItem() |
| 737 | * @return string|false |
| 738 | */ |
| 739 | public function getMetadata() { |
| 740 | return false; |
| 741 | } |
| 742 | |
| 743 | public function getHandlerState( string $key ) { |
| 744 | return $this->handlerState[$key] ?? null; |
| 745 | } |
| 746 | |
| 747 | public function setHandlerState( string $key, $value ) { |
| 748 | $this->handlerState[$key] = $value; |
| 749 | } |
| 750 | |
| 751 | /** |
| 752 | * Get the unserialized handler-specific metadata |
| 753 | * STUB |
| 754 | * @since 1.37 |
| 755 | * @return array |
| 756 | */ |
| 757 | public function getMetadataArray(): array { |
| 758 | return []; |
| 759 | } |
| 760 | |
| 761 | /** |
| 762 | * Get a specific element of the unserialized handler-specific metadata. |
| 763 | * |
| 764 | * @since 1.37 |
| 765 | * @param string $itemName |
| 766 | * @return mixed |
| 767 | */ |
| 768 | public function getMetadataItem( string $itemName ) { |
| 769 | $items = $this->getMetadataItems( [ $itemName ] ); |
| 770 | return $items[$itemName] ?? null; |
| 771 | } |
| 772 | |
| 773 | /** |
| 774 | * Get multiple elements of the unserialized handler-specific metadata. |
| 775 | * |
| 776 | * @since 1.37 |
| 777 | * @param string[] $itemNames |
| 778 | * @return array |
| 779 | */ |
| 780 | public function getMetadataItems( array $itemNames ): array { |
| 781 | return array_intersect_key( |
| 782 | $this->getMetadataArray(), |
| 783 | array_fill_keys( $itemNames, true ) ); |
| 784 | } |
| 785 | |
| 786 | /** |
| 787 | * Like getMetadata but returns a handler independent array of common values. |
| 788 | * @see MediaHandler::getCommonMetaArray() |
| 789 | * @return array|false Array or false if not supported |
| 790 | * @since 1.23 |
| 791 | */ |
| 792 | public function getCommonMetaArray() { |
| 793 | $handler = $this->getHandler(); |
| 794 | return $handler ? $handler->getCommonMetaArray( $this ) : false; |
| 795 | } |
| 796 | |
| 797 | /** |
| 798 | * get versioned metadata |
| 799 | * |
| 800 | * @param array $metadata Array of unserialized metadata |
| 801 | * @param int|string $version Version number. |
| 802 | * @return array Array containing metadata, or what was passed to it on fail |
| 803 | */ |
| 804 | public function convertMetadataVersion( $metadata, $version ) { |
| 805 | $handler = $this->getHandler(); |
| 806 | if ( $handler ) { |
| 807 | return $handler->convertMetadataVersion( $metadata, $version ); |
| 808 | } else { |
| 809 | return $metadata; |
| 810 | } |
| 811 | } |
| 812 | |
| 813 | /** |
| 814 | * Return the bit depth of the file |
| 815 | * Overridden by LocalFile |
| 816 | * STUB |
| 817 | * @stable to override |
| 818 | * @return int |
| 819 | */ |
| 820 | public function getBitDepth() { |
| 821 | return 0; |
| 822 | } |
| 823 | |
| 824 | /** |
| 825 | * Return the size of the image file, in bytes |
| 826 | * Overridden by LocalFile, UnregisteredLocalFile |
| 827 | * STUB |
| 828 | * @stable to override |
| 829 | * @return int|false |
| 830 | */ |
| 831 | public function getSize() { |
| 832 | return false; |
| 833 | } |
| 834 | |
| 835 | /** |
| 836 | * Returns the MIME type of the file. |
| 837 | * Overridden by LocalFile, UnregisteredLocalFile |
| 838 | * STUB |
| 839 | * |
| 840 | * @stable to override |
| 841 | * @return string |
| 842 | */ |
| 843 | public function getMimeType() { |
| 844 | return 'unknown/unknown'; |
| 845 | } |
| 846 | |
| 847 | /** |
| 848 | * Return the type of the media in the file. |
| 849 | * Use the value returned by this function with the MEDIATYPE_xxx constants. |
| 850 | * Overridden by LocalFile, |
| 851 | * STUB |
| 852 | * @stable to override |
| 853 | * @return string |
| 854 | */ |
| 855 | public function getMediaType() { |
| 856 | return MEDIATYPE_UNKNOWN; |
| 857 | } |
| 858 | |
| 859 | /** |
| 860 | * Checks if the output of transform() for this file is likely to be valid. |
| 861 | * |
| 862 | * In other words, this will return true if a thumbnail can be provided for this |
| 863 | * image (e.g. if [[File:...|thumb]] produces a result on a wikitext page). |
| 864 | * |
| 865 | * If this is false, various user elements will display a placeholder instead. |
| 866 | * |
| 867 | * @return bool |
| 868 | */ |
| 869 | public function canRender() { |
| 870 | if ( !isset( $this->canRender ) ) { |
| 871 | $this->canRender = $this->getHandler() && $this->handler->canRender( $this ) && $this->exists(); |
| 872 | } |
| 873 | |
| 874 | return $this->canRender; |
| 875 | } |
| 876 | |
| 877 | /** |
| 878 | * Accessor for __get() |
| 879 | * @return bool |
| 880 | */ |
| 881 | protected function getCanRender() { |
| 882 | return $this->canRender(); |
| 883 | } |
| 884 | |
| 885 | /** |
| 886 | * Return true if the file is of a type that can't be directly |
| 887 | * rendered by typical browsers and needs to be re-rasterized. |
| 888 | * |
| 889 | * This returns true for everything but the bitmap types |
| 890 | * supported by all browsers, i.e. JPEG; GIF and PNG. It will |
| 891 | * also return true for any non-image formats. |
| 892 | * |
| 893 | * @stable to override |
| 894 | * @return bool |
| 895 | */ |
| 896 | public function mustRender() { |
| 897 | return $this->getHandler() && $this->handler->mustRender( $this ); |
| 898 | } |
| 899 | |
| 900 | /** |
| 901 | * Alias for canRender() |
| 902 | * |
| 903 | * @return bool |
| 904 | */ |
| 905 | public function allowInlineDisplay() { |
| 906 | return $this->canRender(); |
| 907 | } |
| 908 | |
| 909 | /** |
| 910 | * Determines if this media file is in a format that is unlikely to |
| 911 | * contain viruses or malicious content. It uses the global |
| 912 | * $wgTrustedMediaFormats list to determine if the file is safe. |
| 913 | * |
| 914 | * This is used to show a warning on the description page of non-safe files. |
| 915 | * It may also be used to disallow direct [[media:...]] links to such files. |
| 916 | * |
| 917 | * Note that this function will always return true if allowInlineDisplay() |
| 918 | * or isTrustedFile() is true for this file. |
| 919 | * |
| 920 | * @return bool |
| 921 | */ |
| 922 | public function isSafeFile() { |
| 923 | if ( !isset( $this->isSafeFile ) ) { |
| 924 | $this->isSafeFile = $this->getIsSafeFileUncached(); |
| 925 | } |
| 926 | |
| 927 | return $this->isSafeFile; |
| 928 | } |
| 929 | |
| 930 | /** |
| 931 | * Accessor for __get() |
| 932 | * |
| 933 | * @return bool |
| 934 | */ |
| 935 | protected function getIsSafeFile() { |
| 936 | return $this->isSafeFile(); |
| 937 | } |
| 938 | |
| 939 | /** |
| 940 | * Uncached accessor |
| 941 | * |
| 942 | * @return bool |
| 943 | */ |
| 944 | protected function getIsSafeFileUncached() { |
| 945 | $trustedMediaFormats = MediaWikiServices::getInstance()->getMainConfig() |
| 946 | ->get( MainConfigNames::TrustedMediaFormats ); |
| 947 | |
| 948 | if ( $this->allowInlineDisplay() ) { |
| 949 | return true; |
| 950 | } |
| 951 | if ( $this->isTrustedFile() ) { |
| 952 | return true; |
| 953 | } |
| 954 | |
| 955 | $type = $this->getMediaType(); |
| 956 | $mime = $this->getMimeType(); |
| 957 | |
| 958 | if ( !$type || $type === MEDIATYPE_UNKNOWN ) { |
| 959 | return false; # unknown type, not trusted |
| 960 | } |
| 961 | if ( in_array( $type, $trustedMediaFormats ) ) { |
| 962 | return true; |
| 963 | } |
| 964 | |
| 965 | if ( $mime === "unknown/unknown" ) { |
| 966 | return false; # unknown type, not trusted |
| 967 | } |
| 968 | if ( in_array( $mime, $trustedMediaFormats ) ) { |
| 969 | return true; |
| 970 | } |
| 971 | |
| 972 | return false; |
| 973 | } |
| 974 | |
| 975 | /** |
| 976 | * Returns true if the file is flagged as trusted. Files flagged that way |
| 977 | * can be linked to directly, even if that is not allowed for this type of |
| 978 | * file normally. |
| 979 | * |
| 980 | * This is a dummy function right now and always returns false. It could be |
| 981 | * implemented to extract a flag from the database. The trusted flag could be |
| 982 | * set on upload, if the user has sufficient privileges, to bypass script- |
| 983 | * and html-filters. It may even be coupled with cryptographic signatures |
| 984 | * or such. |
| 985 | * |
| 986 | * @return bool |
| 987 | */ |
| 988 | protected function isTrustedFile() { |
| 989 | # this could be implemented to check a flag in the database, |
| 990 | # look for signatures, etc |
| 991 | return false; |
| 992 | } |
| 993 | |
| 994 | /** |
| 995 | * Load any lazy-loaded file object fields from source |
| 996 | * |
| 997 | * This is only useful when setting $flags |
| 998 | * |
| 999 | * Overridden by LocalFile to actually query the DB |
| 1000 | * |
| 1001 | * @stable to override |
| 1002 | * @param int $flags Bitfield of IDBAccessObject::READ_* constants |
| 1003 | */ |
| 1004 | public function load( $flags = 0 ) { |
| 1005 | } |
| 1006 | |
| 1007 | /** |
| 1008 | * Returns true if file exists in the repository. |
| 1009 | * |
| 1010 | * Overridden by LocalFile to avoid unnecessary stat calls. |
| 1011 | * |
| 1012 | * @stable to override |
| 1013 | * @return bool Whether file exists in the repository. |
| 1014 | */ |
| 1015 | public function exists() { |
| 1016 | return $this->getPath() && $this->repo->fileExists( $this->path ); |
| 1017 | } |
| 1018 | |
| 1019 | /** |
| 1020 | * Returns true if file exists in the repository and can be included in a page. |
| 1021 | * It would be unsafe to include private images, making public thumbnails inadvertently |
| 1022 | * |
| 1023 | * @stable to override |
| 1024 | * @return bool Whether file exists in the repository and is includable. |
| 1025 | */ |
| 1026 | public function isVisible() { |
| 1027 | return $this->exists(); |
| 1028 | } |
| 1029 | |
| 1030 | /** |
| 1031 | * @return string|false |
| 1032 | */ |
| 1033 | private function getTransformScript() { |
| 1034 | if ( !isset( $this->transformScript ) ) { |
| 1035 | $this->transformScript = false; |
| 1036 | if ( $this->repo ) { |
| 1037 | $script = $this->repo->getThumbScriptUrl(); |
| 1038 | if ( $script ) { |
| 1039 | $this->transformScript = wfAppendQuery( $script, [ 'f' => $this->getName() ] ); |
| 1040 | } |
| 1041 | } |
| 1042 | } |
| 1043 | |
| 1044 | return $this->transformScript; |
| 1045 | } |
| 1046 | |
| 1047 | /** |
| 1048 | * Get a ThumbnailImage which is the same size as the source |
| 1049 | * |
| 1050 | * @param array $handlerParams |
| 1051 | * |
| 1052 | * @return ThumbnailImage|MediaTransformOutput|false False on failure |
| 1053 | */ |
| 1054 | public function getUnscaledThumb( $handlerParams = [] ) { |
| 1055 | $hp =& $handlerParams; |
| 1056 | $page = $hp['page'] ?? false; |
| 1057 | $width = $this->getWidth( $page ); |
| 1058 | if ( !$width ) { |
| 1059 | return $this->iconThumb(); |
| 1060 | } |
| 1061 | $hp['width'] = $width; |
| 1062 | // be sure to ignore any height specification as well (T64258) |
| 1063 | unset( $hp['height'] ); |
| 1064 | |
| 1065 | return $this->transform( $hp ); |
| 1066 | } |
| 1067 | |
| 1068 | /** |
| 1069 | * Return the file name of a thumbnail with the specified parameters. |
| 1070 | * Use File::THUMB_FULL_NAME to always get a name like "<params>-<source>". |
| 1071 | * Otherwise, the format may be "<params>-<source>" or "<params>-thumbnail.<ext>". |
| 1072 | * @stable to override |
| 1073 | * |
| 1074 | * @param array $params Handler-specific parameters |
| 1075 | * @param int $flags Bitfield that supports THUMB_* constants |
| 1076 | * @return string|null |
| 1077 | */ |
| 1078 | public function thumbName( $params, $flags = 0 ) { |
| 1079 | $name = ( $this->repo && !( $flags & self::THUMB_FULL_NAME ) ) |
| 1080 | ? $this->repo->nameForThumb( $this->getName() ) |
| 1081 | : $this->getName(); |
| 1082 | |
| 1083 | return $this->generateThumbName( $name, $params ); |
| 1084 | } |
| 1085 | |
| 1086 | /** |
| 1087 | * Generate a thumbnail file name from a name and specified parameters |
| 1088 | * @stable to override |
| 1089 | * |
| 1090 | * @param string $name |
| 1091 | * @param array $params Parameters which will be passed to MediaHandler::makeParamString |
| 1092 | * @return string|null |
| 1093 | */ |
| 1094 | public function generateThumbName( $name, $params ) { |
| 1095 | if ( !$this->getHandler() ) { |
| 1096 | return null; |
| 1097 | } |
| 1098 | $extension = $this->getExtension(); |
| 1099 | [ $thumbExt, ] = $this->getHandler()->getThumbType( |
| 1100 | $extension, $this->getMimeType(), $params ); |
| 1101 | $thumbName = $this->getHandler()->makeParamString( $params ); |
| 1102 | |
| 1103 | if ( $this->repo->supportsSha1URLs() ) { |
| 1104 | $thumbName .= '-' . $this->getSha1() . '.' . $thumbExt; |
| 1105 | } else { |
| 1106 | $thumbName .= '-' . $name; |
| 1107 | |
| 1108 | if ( $thumbExt != $extension ) { |
| 1109 | $thumbName .= ".$thumbExt"; |
| 1110 | } |
| 1111 | } |
| 1112 | |
| 1113 | return $thumbName; |
| 1114 | } |
| 1115 | |
| 1116 | /** |
| 1117 | * Create a thumbnail of the image having the specified width/height. |
| 1118 | * The thumbnail will not be created if the width is larger than the |
| 1119 | * image's width. Let the browser do the scaling in this case. |
| 1120 | * The thumbnail is stored on disk and is only computed if the thumbnail |
| 1121 | * file does not exist OR if it is older than the image. |
| 1122 | * Returns the URL. |
| 1123 | * |
| 1124 | * Keeps aspect ratio of original image. If both width and height are |
| 1125 | * specified, the generated image will be no bigger than width x height, |
| 1126 | * and will also have correct aspect ratio. |
| 1127 | * |
| 1128 | * @param int $width Maximum width of the generated thumbnail |
| 1129 | * @param int $height Maximum height of the image (optional) |
| 1130 | * |
| 1131 | * @return string |
| 1132 | */ |
| 1133 | public function createThumb( $width, $height = -1 ) { |
| 1134 | $params = [ 'width' => $width ]; |
| 1135 | if ( $height != -1 ) { |
| 1136 | $params['height'] = $height; |
| 1137 | } |
| 1138 | $thumb = $this->transform( $params ); |
| 1139 | if ( !$thumb || $thumb->isError() ) { |
| 1140 | return ''; |
| 1141 | } |
| 1142 | |
| 1143 | return $thumb->getUrl(); |
| 1144 | } |
| 1145 | |
| 1146 | /** |
| 1147 | * Return either a MediaTransformError or placeholder thumbnail (if $wgIgnoreImageErrors) |
| 1148 | * |
| 1149 | * @param string $thumbPath Thumbnail storage path |
| 1150 | * @param string $thumbUrl Thumbnail URL |
| 1151 | * @param array $params |
| 1152 | * @param int $flags |
| 1153 | * @return MediaTransformOutput |
| 1154 | */ |
| 1155 | protected function transformErrorOutput( $thumbPath, $thumbUrl, $params, $flags ) { |
| 1156 | $ignoreImageErrors = MediaWikiServices::getInstance()->getMainConfig() |
| 1157 | ->get( MainConfigNames::IgnoreImageErrors ); |
| 1158 | |
| 1159 | $handler = $this->getHandler(); |
| 1160 | if ( $handler && $ignoreImageErrors && !( $flags & self::RENDER_NOW ) ) { |
| 1161 | return $handler->getTransform( $this, $thumbPath, $thumbUrl, $params ); |
| 1162 | } else { |
| 1163 | return new MediaTransformError( 'thumbnail_error', |
| 1164 | $params['width'], 0, wfMessage( 'thumbnail-dest-create' ) ); |
| 1165 | } |
| 1166 | } |
| 1167 | |
| 1168 | /** |
| 1169 | * Transform a media file |
| 1170 | * @stable to override |
| 1171 | * |
| 1172 | * @param array $params An associative array of handler-specific parameters. |
| 1173 | * Typical keys are width, height and page. |
| 1174 | * @param int $flags A bitfield, may contain self::RENDER_NOW to force rendering |
| 1175 | * @return ThumbnailImage|MediaTransformOutput|false False on failure |
| 1176 | */ |
| 1177 | public function transform( $params, $flags = 0 ) { |
| 1178 | $thumbnailEpoch = MediaWikiServices::getInstance()->getMainConfig() |
| 1179 | ->get( MainConfigNames::ThumbnailEpoch ); |
| 1180 | |
| 1181 | do { |
| 1182 | if ( !$this->canRender() ) { |
| 1183 | $thumb = $this->iconThumb(); |
| 1184 | break; // not a bitmap or renderable image, don't try |
| 1185 | } |
| 1186 | |
| 1187 | // Get the descriptionUrl to embed it as comment into the thumbnail. T21791. |
| 1188 | $descriptionUrl = $this->getDescriptionUrl(); |
| 1189 | if ( $descriptionUrl ) { |
| 1190 | $params['descriptionUrl'] = MediaWikiServices::getInstance()->getUrlUtils() |
| 1191 | ->expand( $descriptionUrl, PROTO_CANONICAL ); |
| 1192 | } |
| 1193 | |
| 1194 | $handler = $this->getHandler(); |
| 1195 | $script = $this->getTransformScript(); |
| 1196 | if ( $script && !( $flags & self::RENDER_NOW ) ) { |
| 1197 | // Use a script to transform on client request, if possible |
| 1198 | $thumb = $handler->getScriptedTransform( $this, $script, $params ); |
| 1199 | if ( $thumb ) { |
| 1200 | break; |
| 1201 | } |
| 1202 | } |
| 1203 | |
| 1204 | $normalisedParams = $params; |
| 1205 | $handler->normaliseParams( $this, $normalisedParams ); |
| 1206 | |
| 1207 | $thumbName = $this->thumbName( $normalisedParams ); |
| 1208 | $thumbUrl = $this->getThumbUrl( $thumbName ); |
| 1209 | $thumbPath = $this->getThumbPath( $thumbName ); // final thumb path |
| 1210 | if ( isset( $normalisedParams['isFilePageThumb'] ) && $normalisedParams['isFilePageThumb'] ) { |
| 1211 | // Use a versioned URL on file description pages |
| 1212 | $thumbUrl = $this->getFilePageThumbUrl( $thumbUrl ); |
| 1213 | } |
| 1214 | |
| 1215 | if ( $this->repo ) { |
| 1216 | // Defer rendering if a 404 handler is set up... |
| 1217 | if ( $this->repo->canTransformVia404() && !( $flags & self::RENDER_NOW ) ) { |
| 1218 | // XXX: Pass in the storage path even though we are not rendering anything |
| 1219 | // and the path is supposed to be an FS path. This is due to getScalerType() |
| 1220 | // getting called on the path and clobbering $thumb->getUrl() if it's false. |
| 1221 | $thumb = $handler->getTransform( $this, $thumbPath, $thumbUrl, $params ); |
| 1222 | break; |
| 1223 | } |
| 1224 | // Check if an up-to-date thumbnail already exists... |
| 1225 | wfDebug( __METHOD__ . ": Doing stat for $thumbPath" ); |
| 1226 | if ( !( $flags & self::RENDER_FORCE ) && $this->repo->fileExists( $thumbPath ) ) { |
| 1227 | $timestamp = $this->repo->getFileTimestamp( $thumbPath ); |
| 1228 | if ( $timestamp !== false && $timestamp >= $thumbnailEpoch ) { |
| 1229 | // XXX: Pass in the storage path even though we are not rendering anything |
| 1230 | // and the path is supposed to be an FS path. This is due to getScalerType() |
| 1231 | // getting called on the path and clobbering $thumb->getUrl() if it's false. |
| 1232 | $thumb = $handler->getTransform( $this, $thumbPath, $thumbUrl, $params ); |
| 1233 | $thumb->setStoragePath( $thumbPath ); |
| 1234 | break; |
| 1235 | } |
| 1236 | } elseif ( $flags & self::RENDER_FORCE ) { |
| 1237 | wfDebug( __METHOD__ . " forcing rendering per flag File::RENDER_FORCE" ); |
| 1238 | } |
| 1239 | |
| 1240 | // If the backend is ready-only, don't keep generating thumbnails |
| 1241 | // only to return transformation errors, just return the error now. |
| 1242 | if ( $this->repo->getReadOnlyReason() !== false ) { |
| 1243 | $thumb = $this->transformErrorOutput( $thumbPath, $thumbUrl, $params, $flags ); |
| 1244 | break; |
| 1245 | } |
| 1246 | |
| 1247 | // Check to see if local transformation is disabled. |
| 1248 | if ( !$this->repo->canTransformLocally() ) { |
| 1249 | LoggerFactory::getInstance( 'thumbnail' ) |
| 1250 | ->error( 'Local transform denied by configuration' ); |
| 1251 | $thumb = new MediaTransformError( |
| 1252 | wfMessage( |
| 1253 | 'thumbnail_error', |
| 1254 | 'MediaWiki is configured to disallow local image scaling' |
| 1255 | ), |
| 1256 | $params['width'], |
| 1257 | 0 |
| 1258 | ); |
| 1259 | break; |
| 1260 | } |
| 1261 | } |
| 1262 | |
| 1263 | $tmpFile = $this->makeTransformTmpFile( $thumbPath ); |
| 1264 | |
| 1265 | if ( !$tmpFile ) { |
| 1266 | $thumb = $this->transformErrorOutput( $thumbPath, $thumbUrl, $params, $flags ); |
| 1267 | } else { |
| 1268 | $thumb = $this->generateAndSaveThumb( $tmpFile, $params, $flags ); |
| 1269 | } |
| 1270 | } while ( false ); |
| 1271 | |
| 1272 | return is_object( $thumb ) ? $thumb : false; |
| 1273 | } |
| 1274 | |
| 1275 | /** |
| 1276 | * Generates a thumbnail according to the given parameters and saves it to storage |
| 1277 | * @param TempFSFile $tmpFile Temporary file where the rendered thumbnail will be saved |
| 1278 | * @param array $transformParams |
| 1279 | * @param int $flags |
| 1280 | * @return MediaTransformOutput|false |
| 1281 | */ |
| 1282 | public function generateAndSaveThumb( $tmpFile, $transformParams, $flags ) { |
| 1283 | $ignoreImageErrors = MediaWikiServices::getInstance()->getMainConfig() |
| 1284 | ->get( MainConfigNames::IgnoreImageErrors ); |
| 1285 | |
| 1286 | if ( !$this->repo->canTransformLocally() ) { |
| 1287 | LoggerFactory::getInstance( 'thumbnail' ) |
| 1288 | ->error( 'Local transform denied by configuration' ); |
| 1289 | return new MediaTransformError( |
| 1290 | wfMessage( |
| 1291 | 'thumbnail_error', |
| 1292 | 'MediaWiki is configured to disallow local image scaling' |
| 1293 | ), |
| 1294 | $transformParams['width'], |
| 1295 | 0 |
| 1296 | ); |
| 1297 | } |
| 1298 | |
| 1299 | $stats = MediaWikiServices::getInstance()->getStatsdDataFactory(); |
| 1300 | |
| 1301 | $handler = $this->getHandler(); |
| 1302 | |
| 1303 | $normalisedParams = $transformParams; |
| 1304 | $handler->normaliseParams( $this, $normalisedParams ); |
| 1305 | |
| 1306 | $thumbName = $this->thumbName( $normalisedParams ); |
| 1307 | $thumbUrl = $this->getThumbUrl( $thumbName ); |
| 1308 | $thumbPath = $this->getThumbPath( $thumbName ); // final thumb path |
| 1309 | if ( isset( $normalisedParams['isFilePageThumb'] ) && $normalisedParams['isFilePageThumb'] ) { |
| 1310 | // Use a versioned URL on file description pages |
| 1311 | $thumbUrl = $this->getFilePageThumbUrl( $thumbUrl ); |
| 1312 | } |
| 1313 | |
| 1314 | $tmpThumbPath = $tmpFile->getPath(); |
| 1315 | |
| 1316 | if ( $handler->supportsBucketing() ) { |
| 1317 | $this->generateBucketsIfNeeded( $normalisedParams, $flags ); |
| 1318 | } |
| 1319 | |
| 1320 | $starttime = microtime( true ); |
| 1321 | |
| 1322 | // Actually render the thumbnail... |
| 1323 | $thumb = $handler->doTransform( $this, $tmpThumbPath, $thumbUrl, $transformParams ); |
| 1324 | $tmpFile->bind( $thumb ); // keep alive with $thumb |
| 1325 | |
| 1326 | $statTiming = microtime( true ) - $starttime; |
| 1327 | $stats->timing( 'media.thumbnail.generate.transform', 1000 * $statTiming ); |
| 1328 | |
| 1329 | if ( !$thumb ) { // bad params? |
| 1330 | $thumb = false; |
| 1331 | } elseif ( $thumb->isError() ) { // transform error |
| 1332 | /** @var MediaTransformError $thumb */ |
| 1333 | '@phan-var MediaTransformError $thumb'; |
| 1334 | $this->lastError = $thumb->toText(); |
| 1335 | // Ignore errors if requested |
| 1336 | if ( $ignoreImageErrors && !( $flags & self::RENDER_NOW ) ) { |
| 1337 | $thumb = $handler->getTransform( $this, $tmpThumbPath, $thumbUrl, $transformParams ); |
| 1338 | } |
| 1339 | } elseif ( $this->repo && $thumb->hasFile() && !$thumb->fileIsSource() ) { |
| 1340 | // Copy the thumbnail from the file system into storage... |
| 1341 | |
| 1342 | $starttime = microtime( true ); |
| 1343 | |
| 1344 | $disposition = $this->getThumbDisposition( $thumbName ); |
| 1345 | $status = $this->repo->quickImport( $tmpThumbPath, $thumbPath, $disposition ); |
| 1346 | if ( $status->isOK() ) { |
| 1347 | $thumb->setStoragePath( $thumbPath ); |
| 1348 | } else { |
| 1349 | $thumb = $this->transformErrorOutput( $thumbPath, $thumbUrl, $transformParams, $flags ); |
| 1350 | } |
| 1351 | |
| 1352 | $statTiming = microtime( true ) - $starttime; |
| 1353 | $stats->timing( 'media.thumbnail.generate.store', 1000 * $statTiming ); |
| 1354 | |
| 1355 | // Give extensions a chance to do something with this thumbnail... |
| 1356 | $this->getHookRunner()->onFileTransformed( $this, $thumb, $tmpThumbPath, $thumbPath ); |
| 1357 | } |
| 1358 | |
| 1359 | return $thumb; |
| 1360 | } |
| 1361 | |
| 1362 | /** |
| 1363 | * Generates chained bucketed thumbnails if needed |
| 1364 | * @param array $params |
| 1365 | * @param int $flags |
| 1366 | * @return bool Whether at least one bucket was generated |
| 1367 | */ |
| 1368 | protected function generateBucketsIfNeeded( $params, $flags = 0 ) { |
| 1369 | if ( !$this->repo |
| 1370 | || !isset( $params['physicalWidth'] ) |
| 1371 | || !isset( $params['physicalHeight'] ) |
| 1372 | ) { |
| 1373 | return false; |
| 1374 | } |
| 1375 | |
| 1376 | $bucket = $this->getThumbnailBucket( $params['physicalWidth'] ); |
| 1377 | |
| 1378 | if ( !$bucket || $bucket == $params['physicalWidth'] ) { |
| 1379 | return false; |
| 1380 | } |
| 1381 | |
| 1382 | $bucketPath = $this->getBucketThumbPath( $bucket ); |
| 1383 | |
| 1384 | if ( $this->repo->fileExists( $bucketPath ) ) { |
| 1385 | return false; |
| 1386 | } |
| 1387 | |
| 1388 | $starttime = microtime( true ); |
| 1389 | |
| 1390 | $params['physicalWidth'] = $bucket; |
| 1391 | $params['width'] = $bucket; |
| 1392 | |
| 1393 | $params = $this->getHandler()->sanitizeParamsForBucketing( $params ); |
| 1394 | |
| 1395 | $tmpFile = $this->makeTransformTmpFile( $bucketPath ); |
| 1396 | |
| 1397 | if ( !$tmpFile ) { |
| 1398 | return false; |
| 1399 | } |
| 1400 | |
| 1401 | $thumb = $this->generateAndSaveThumb( $tmpFile, $params, $flags ); |
| 1402 | |
| 1403 | $buckettime = microtime( true ) - $starttime; |
| 1404 | |
| 1405 | if ( !$thumb || $thumb->isError() ) { |
| 1406 | return false; |
| 1407 | } |
| 1408 | |
| 1409 | $this->tmpBucketedThumbCache[$bucket] = $tmpFile->getPath(); |
| 1410 | // For the caching to work, we need to make the tmp file survive as long as |
| 1411 | // this object exists |
| 1412 | $tmpFile->bind( $this ); |
| 1413 | |
| 1414 | MediaWikiServices::getInstance()->getStatsdDataFactory()->timing( |
| 1415 | 'media.thumbnail.generate.bucket', 1000 * $buckettime ); |
| 1416 | |
| 1417 | return true; |
| 1418 | } |
| 1419 | |
| 1420 | /** |
| 1421 | * Returns the most appropriate source image for the thumbnail, given a target thumbnail size |
| 1422 | * @param array $params |
| 1423 | * @return array Source path and width/height of the source |
| 1424 | */ |
| 1425 | public function getThumbnailSource( $params ) { |
| 1426 | if ( $this->repo |
| 1427 | && $this->getHandler()->supportsBucketing() |
| 1428 | && isset( $params['physicalWidth'] ) |
| 1429 | && $bucket = $this->getThumbnailBucket( $params['physicalWidth'] ) |
| 1430 | ) { |
| 1431 | if ( $this->getWidth() != 0 ) { |
| 1432 | $bucketHeight = round( $this->getHeight() * ( $bucket / $this->getWidth() ) ); |
| 1433 | } else { |
| 1434 | $bucketHeight = 0; |
| 1435 | } |
| 1436 | |
| 1437 | // Try to avoid reading from storage if the file was generated by this script |
| 1438 | if ( isset( $this->tmpBucketedThumbCache[$bucket] ) ) { |
| 1439 | $tmpPath = $this->tmpBucketedThumbCache[$bucket]; |
| 1440 | |
| 1441 | if ( file_exists( $tmpPath ) ) { |
| 1442 | return [ |
| 1443 | 'path' => $tmpPath, |
| 1444 | 'width' => $bucket, |
| 1445 | 'height' => $bucketHeight |
| 1446 | ]; |
| 1447 | } |
| 1448 | } |
| 1449 | |
| 1450 | $bucketPath = $this->getBucketThumbPath( $bucket ); |
| 1451 | |
| 1452 | if ( $this->repo->fileExists( $bucketPath ) ) { |
| 1453 | $fsFile = $this->repo->getLocalReference( $bucketPath ); |
| 1454 | |
| 1455 | if ( $fsFile ) { |
| 1456 | return [ |
| 1457 | 'path' => $fsFile->getPath(), |
| 1458 | 'width' => $bucket, |
| 1459 | 'height' => $bucketHeight |
| 1460 | ]; |
| 1461 | } |
| 1462 | } |
| 1463 | } |
| 1464 | |
| 1465 | // Thumbnailing a very large file could result in network saturation if |
| 1466 | // everyone does it at once. |
| 1467 | if ( $this->getSize() >= 1e7 ) { // 10 MB |
| 1468 | $work = new PoolCounterWorkViaCallback( 'GetLocalFileCopy', sha1( $this->getName() ), |
| 1469 | [ |
| 1470 | 'doWork' => function () { |
| 1471 | return $this->getLocalRefPath(); |
| 1472 | } |
| 1473 | ] |
| 1474 | ); |
| 1475 | $srcPath = $work->execute(); |
| 1476 | } else { |
| 1477 | $srcPath = $this->getLocalRefPath(); |
| 1478 | } |
| 1479 | |
| 1480 | // Original file |
| 1481 | return [ |
| 1482 | 'path' => $srcPath, |
| 1483 | 'width' => $this->getWidth(), |
| 1484 | 'height' => $this->getHeight() |
| 1485 | ]; |
| 1486 | } |
| 1487 | |
| 1488 | /** |
| 1489 | * Returns the repo path of the thumb for a given bucket |
| 1490 | * @param int $bucket |
| 1491 | * @return string |
| 1492 | */ |
| 1493 | protected function getBucketThumbPath( $bucket ) { |
| 1494 | $thumbName = $this->getBucketThumbName( $bucket ); |
| 1495 | return $this->getThumbPath( $thumbName ); |
| 1496 | } |
| 1497 | |
| 1498 | /** |
| 1499 | * Returns the name of the thumb for a given bucket |
| 1500 | * @param int $bucket |
| 1501 | * @return string |
| 1502 | */ |
| 1503 | protected function getBucketThumbName( $bucket ) { |
| 1504 | return $this->thumbName( [ 'physicalWidth' => $bucket ] ); |
| 1505 | } |
| 1506 | |
| 1507 | /** |
| 1508 | * Creates a temp FS file with the same extension and the thumbnail |
| 1509 | * @param string $thumbPath Thumbnail path |
| 1510 | * @return TempFSFile|null |
| 1511 | */ |
| 1512 | protected function makeTransformTmpFile( $thumbPath ) { |
| 1513 | $thumbExt = FileBackend::extensionFromPath( $thumbPath ); |
| 1514 | return MediaWikiServices::getInstance()->getTempFSFileFactory() |
| 1515 | ->newTempFSFile( 'transform_', $thumbExt ); |
| 1516 | } |
| 1517 | |
| 1518 | /** |
| 1519 | * @param string $thumbName Thumbnail name |
| 1520 | * @param string $dispositionType Type of disposition (either "attachment" or "inline") |
| 1521 | * @return string Content-Disposition header value |
| 1522 | */ |
| 1523 | public function getThumbDisposition( $thumbName, $dispositionType = 'inline' ) { |
| 1524 | $fileName = $this->getName(); // file name to suggest |
| 1525 | $thumbExt = FileBackend::extensionFromPath( $thumbName ); |
| 1526 | if ( $thumbExt != '' && $thumbExt !== $this->getExtension() ) { |
| 1527 | $fileName .= ".$thumbExt"; |
| 1528 | } |
| 1529 | |
| 1530 | return FileBackend::makeContentDisposition( $dispositionType, $fileName ); |
| 1531 | } |
| 1532 | |
| 1533 | /** |
| 1534 | * Hook into transform() to allow migration of thumbnail files |
| 1535 | * STUB |
| 1536 | * @stable to override |
| 1537 | * @param string $thumbName |
| 1538 | */ |
| 1539 | protected function migrateThumbFile( $thumbName ) { |
| 1540 | } |
| 1541 | |
| 1542 | /** |
| 1543 | * Get a MediaHandler instance for this file |
| 1544 | * |
| 1545 | * @return MediaHandler|false Registered MediaHandler for file's MIME type |
| 1546 | * or false if none found |
| 1547 | */ |
| 1548 | public function getHandler() { |
| 1549 | if ( !isset( $this->handler ) ) { |
| 1550 | $this->handler = MediaHandler::getHandler( $this->getMimeType() ); |
| 1551 | } |
| 1552 | |
| 1553 | return $this->handler; |
| 1554 | } |
| 1555 | |
| 1556 | /** |
| 1557 | * Get a ThumbnailImage representing a file type icon |
| 1558 | * |
| 1559 | * @return ThumbnailImage|null |
| 1560 | */ |
| 1561 | public function iconThumb() { |
| 1562 | global $IP; |
| 1563 | $resourceBasePath = MediaWikiServices::getInstance()->getMainConfig() |
| 1564 | ->get( MainConfigNames::ResourceBasePath ); |
| 1565 | $assetsPath = "{$resourceBasePath}/resources/assets/file-type-icons/"; |
| 1566 | $assetsDirectory = "$IP/resources/assets/file-type-icons/"; |
| 1567 | |
| 1568 | $try = [ 'fileicon-' . $this->getExtension() . '.png', 'fileicon.png' ]; |
| 1569 | foreach ( $try as $icon ) { |
| 1570 | if ( file_exists( $assetsDirectory . $icon ) ) { // always FS |
| 1571 | $params = [ 'width' => 120, 'height' => 120 ]; |
| 1572 | |
| 1573 | return new ThumbnailImage( $this, $assetsPath . $icon, false, $params ); |
| 1574 | } |
| 1575 | } |
| 1576 | |
| 1577 | return null; |
| 1578 | } |
| 1579 | |
| 1580 | /** |
| 1581 | * Get last thumbnailing error. |
| 1582 | * Largely obsolete. |
| 1583 | * @return string |
| 1584 | */ |
| 1585 | public function getLastError() { |
| 1586 | return $this->lastError; |
| 1587 | } |
| 1588 | |
| 1589 | /** |
| 1590 | * Get all thumbnail names previously generated for this file |
| 1591 | * STUB |
| 1592 | * Overridden by LocalFile |
| 1593 | * @stable to override |
| 1594 | * @return string[] |
| 1595 | */ |
| 1596 | protected function getThumbnails() { |
| 1597 | return []; |
| 1598 | } |
| 1599 | |
| 1600 | /** |
| 1601 | * Purge shared caches such as thumbnails and DB data caching |
| 1602 | * STUB |
| 1603 | * Overridden by LocalFile |
| 1604 | * @stable to override |
| 1605 | * @param array $options Options, which include: |
| 1606 | * 'forThumbRefresh' : The purging is only to refresh thumbnails |
| 1607 | */ |
| 1608 | public function purgeCache( $options = [] ) { |
| 1609 | } |
| 1610 | |
| 1611 | /** |
| 1612 | * Purge the file description page, but don't go after |
| 1613 | * pages using the file. Use when modifying file history |
| 1614 | * but not the current data. |
| 1615 | */ |
| 1616 | public function purgeDescription() { |
| 1617 | $title = $this->getTitle(); |
| 1618 | if ( $title ) { |
| 1619 | $title->invalidateCache(); |
| 1620 | $hcu = MediaWikiServices::getInstance()->getHtmlCacheUpdater(); |
| 1621 | $hcu->purgeTitleUrls( $title, $hcu::PURGE_INTENT_TXROUND_REFLECTED ); |
| 1622 | } |
| 1623 | } |
| 1624 | |
| 1625 | /** |
| 1626 | * Purge metadata and all affected pages when the file is created, |
| 1627 | * deleted, or majorly updated. |
| 1628 | */ |
| 1629 | public function purgeEverything() { |
| 1630 | // Delete thumbnails and refresh file metadata cache |
| 1631 | $this->purgeCache(); |
| 1632 | $this->purgeDescription(); |
| 1633 | // Purge cache of all pages using this file |
| 1634 | $title = $this->getTitle(); |
| 1635 | if ( $title ) { |
| 1636 | $job = HTMLCacheUpdateJob::newForBacklinks( |
| 1637 | $title, |
| 1638 | 'imagelinks', |
| 1639 | [ 'causeAction' => 'file-purge' ] |
| 1640 | ); |
| 1641 | MediaWikiServices::getInstance()->getJobQueueGroup()->lazyPush( $job ); |
| 1642 | } |
| 1643 | } |
| 1644 | |
| 1645 | /** |
| 1646 | * Return a fragment of the history of file. |
| 1647 | * |
| 1648 | * STUB |
| 1649 | * @stable to override |
| 1650 | * @param int|null $limit Limit of rows to return |
| 1651 | * @param string|int|null $start Only revisions older than $start will be returned |
| 1652 | * @param string|int|null $end Only revisions newer than $end will be returned |
| 1653 | * @param bool $inc Include the endpoints of the time range |
| 1654 | * |
| 1655 | * @return File[] |
| 1656 | */ |
| 1657 | public function getHistory( $limit = null, $start = null, $end = null, $inc = true ) { |
| 1658 | return []; |
| 1659 | } |
| 1660 | |
| 1661 | /** |
| 1662 | * Return the history of this file, line by line. Starts with current version, |
| 1663 | * then old versions. Should return an object similar to an image/oldimage |
| 1664 | * database row. |
| 1665 | * |
| 1666 | * STUB |
| 1667 | * @stable to override |
| 1668 | * Overridden in LocalFile |
| 1669 | * @return bool |
| 1670 | */ |
| 1671 | public function nextHistoryLine() { |
| 1672 | return false; |
| 1673 | } |
| 1674 | |
| 1675 | /** |
| 1676 | * Reset the history pointer to the first element of the history. |
| 1677 | * Always call this function after using nextHistoryLine() to free db resources |
| 1678 | * STUB |
| 1679 | * Overridden in LocalFile. |
| 1680 | * @stable to override |
| 1681 | */ |
| 1682 | public function resetHistory() { |
| 1683 | } |
| 1684 | |
| 1685 | /** |
| 1686 | * Get the filename hash component of the directory including trailing slash, |
| 1687 | * e.g. f/fa/ |
| 1688 | * If the repository is not hashed, returns an empty string. |
| 1689 | * |
| 1690 | * @return string |
| 1691 | */ |
| 1692 | public function getHashPath() { |
| 1693 | if ( $this->hashPath === null ) { |
| 1694 | $this->assertRepoDefined(); |
| 1695 | $this->hashPath = $this->repo->getHashPath( $this->getName() ); |
| 1696 | } |
| 1697 | |
| 1698 | return $this->hashPath; |
| 1699 | } |
| 1700 | |
| 1701 | /** |
| 1702 | * Get the path of the file relative to the public zone root. |
| 1703 | * This function is overridden in OldLocalFile to be like getArchiveRel(). |
| 1704 | * |
| 1705 | * @stable to override |
| 1706 | * @return string |
| 1707 | */ |
| 1708 | public function getRel() { |
| 1709 | return $this->getHashPath() . $this->getName(); |
| 1710 | } |
| 1711 | |
| 1712 | /** |
| 1713 | * Get the path of an archived file relative to the public zone root |
| 1714 | * @stable to override |
| 1715 | * |
| 1716 | * @param string|false $suffix If not false, the name of an archived thumbnail file |
| 1717 | * |
| 1718 | * @return string |
| 1719 | */ |
| 1720 | public function getArchiveRel( $suffix = false ) { |
| 1721 | $path = 'archive/' . $this->getHashPath(); |
| 1722 | if ( $suffix === false ) { |
| 1723 | $path = rtrim( $path, '/' ); |
| 1724 | } else { |
| 1725 | $path .= $suffix; |
| 1726 | } |
| 1727 | |
| 1728 | return $path; |
| 1729 | } |
| 1730 | |
| 1731 | /** |
| 1732 | * Get the path, relative to the thumbnail zone root, of the |
| 1733 | * thumbnail directory or a particular file if $suffix is specified |
| 1734 | * @stable to override |
| 1735 | * |
| 1736 | * @param string|false $suffix If not false, the name of a thumbnail file |
| 1737 | * @return string |
| 1738 | */ |
| 1739 | public function getThumbRel( $suffix = false ) { |
| 1740 | $path = $this->getRel(); |
| 1741 | if ( $suffix !== false ) { |
| 1742 | $path .= '/' . $suffix; |
| 1743 | } |
| 1744 | |
| 1745 | return $path; |
| 1746 | } |
| 1747 | |
| 1748 | /** |
| 1749 | * Get urlencoded path of the file relative to the public zone root. |
| 1750 | * This function is overridden in OldLocalFile to be like getArchiveUrl(). |
| 1751 | * @stable to override |
| 1752 | * |
| 1753 | * @return string |
| 1754 | */ |
| 1755 | public function getUrlRel() { |
| 1756 | return $this->getHashPath() . rawurlencode( $this->getName() ); |
| 1757 | } |
| 1758 | |
| 1759 | /** |
| 1760 | * Get the path, relative to the thumbnail zone root, for an archived file's thumbs directory |
| 1761 | * or a specific thumb if the $suffix is given. |
| 1762 | * |
| 1763 | * @param string $archiveName The timestamped name of an archived image |
| 1764 | * @param string|false $suffix If not false, the name of a thumbnail file |
| 1765 | * @return string |
| 1766 | */ |
| 1767 | private function getArchiveThumbRel( $archiveName, $suffix = false ) { |
| 1768 | $path = $this->getArchiveRel( $archiveName ); |
| 1769 | if ( $suffix !== false ) { |
| 1770 | $path .= '/' . $suffix; |
| 1771 | } |
| 1772 | |
| 1773 | return $path; |
| 1774 | } |
| 1775 | |
| 1776 | /** |
| 1777 | * Get the path of the archived file. |
| 1778 | * |
| 1779 | * @param string|false $suffix If not false, the name of an archived file. |
| 1780 | * @return string |
| 1781 | */ |
| 1782 | public function getArchivePath( $suffix = false ) { |
| 1783 | $this->assertRepoDefined(); |
| 1784 | |
| 1785 | return $this->repo->getZonePath( 'public' ) . '/' . $this->getArchiveRel( $suffix ); |
| 1786 | } |
| 1787 | |
| 1788 | /** |
| 1789 | * Get the path of an archived file's thumbs, or a particular thumb if $suffix is specified |
| 1790 | * |
| 1791 | * @param string $archiveName The timestamped name of an archived image |
| 1792 | * @param string|false $suffix If not false, the name of a thumbnail file |
| 1793 | * @return string |
| 1794 | */ |
| 1795 | public function getArchiveThumbPath( $archiveName, $suffix = false ) { |
| 1796 | $this->assertRepoDefined(); |
| 1797 | |
| 1798 | return $this->repo->getZonePath( 'thumb' ) . '/' . |
| 1799 | $this->getArchiveThumbRel( $archiveName, $suffix ); |
| 1800 | } |
| 1801 | |
| 1802 | /** |
| 1803 | * Get the path of the thumbnail directory, or a particular file if $suffix is specified |
| 1804 | * @stable to override |
| 1805 | * |
| 1806 | * @param string|false $suffix If not false, the name of a thumbnail file |
| 1807 | * @return string |
| 1808 | */ |
| 1809 | public function getThumbPath( $suffix = false ) { |
| 1810 | $this->assertRepoDefined(); |
| 1811 | |
| 1812 | return $this->repo->getZonePath( 'thumb' ) . '/' . $this->getThumbRel( $suffix ); |
| 1813 | } |
| 1814 | |
| 1815 | /** |
| 1816 | * Get the path of the transcoded directory, or a particular file if $suffix is specified |
| 1817 | * |
| 1818 | * @param string|false $suffix If not false, the name of a media file |
| 1819 | * @return string |
| 1820 | */ |
| 1821 | public function getTranscodedPath( $suffix = false ) { |
| 1822 | $this->assertRepoDefined(); |
| 1823 | |
| 1824 | return $this->repo->getZonePath( 'transcoded' ) . '/' . $this->getThumbRel( $suffix ); |
| 1825 | } |
| 1826 | |
| 1827 | /** |
| 1828 | * Get the URL of the archive directory, or a particular file if $suffix is specified |
| 1829 | * @stable to override |
| 1830 | * |
| 1831 | * @param string|false $suffix If not false, the name of an archived file |
| 1832 | * @return string |
| 1833 | */ |
| 1834 | public function getArchiveUrl( $suffix = false ) { |
| 1835 | $this->assertRepoDefined(); |
| 1836 | $ext = $this->getExtension(); |
| 1837 | $path = $this->repo->getZoneUrl( 'public', $ext ) . '/archive/' . $this->getHashPath(); |
| 1838 | if ( $suffix === false ) { |
| 1839 | $path = rtrim( $path, '/' ); |
| 1840 | } else { |
| 1841 | $path .= rawurlencode( $suffix ); |
| 1842 | } |
| 1843 | |
| 1844 | return $path; |
| 1845 | } |
| 1846 | |
| 1847 | /** |
| 1848 | * Get the URL of the archived file's thumbs, or a particular thumb if $suffix is specified |
| 1849 | * @stable to override |
| 1850 | * |
| 1851 | * @param string $archiveName The timestamped name of an archived image |
| 1852 | * @param string|false $suffix If not false, the name of a thumbnail file |
| 1853 | * @return string |
| 1854 | */ |
| 1855 | public function getArchiveThumbUrl( $archiveName, $suffix = false ) { |
| 1856 | $this->assertRepoDefined(); |
| 1857 | $ext = $this->getExtension(); |
| 1858 | $path = $this->repo->getZoneUrl( 'thumb', $ext ) . '/archive/' . |
| 1859 | $this->getHashPath() . rawurlencode( $archiveName ); |
| 1860 | if ( $suffix !== false ) { |
| 1861 | $path .= '/' . rawurlencode( $suffix ); |
| 1862 | } |
| 1863 | |
| 1864 | return $path; |
| 1865 | } |
| 1866 | |
| 1867 | /** |
| 1868 | * Get the URL of the zone directory, or a particular file if $suffix is specified |
| 1869 | * |
| 1870 | * @param string $zone Name of requested zone |
| 1871 | * @param string|false $suffix If not false, the name of a file in zone |
| 1872 | * @return string Path |
| 1873 | */ |
| 1874 | private function getZoneUrl( $zone, $suffix = false ) { |
| 1875 | $this->assertRepoDefined(); |
| 1876 | $ext = $this->getExtension(); |
| 1877 | $path = $this->repo->getZoneUrl( $zone, $ext ) . '/' . $this->getUrlRel(); |
| 1878 | if ( $suffix !== false ) { |
| 1879 | $path .= '/' . rawurlencode( $suffix ); |
| 1880 | } |
| 1881 | |
| 1882 | return $path; |
| 1883 | } |
| 1884 | |
| 1885 | /** |
| 1886 | * Get the URL of the thumbnail directory, or a particular file if $suffix is specified |
| 1887 | * @stable to override |
| 1888 | * |
| 1889 | * @param string|false $suffix If not false, the name of a thumbnail file |
| 1890 | * @return string Path |
| 1891 | */ |
| 1892 | public function getThumbUrl( $suffix = false ) { |
| 1893 | return $this->getZoneUrl( 'thumb', $suffix ); |
| 1894 | } |
| 1895 | |
| 1896 | /** |
| 1897 | * Append a version parameter to the end of a file URL |
| 1898 | * Only to be used on File pages. |
| 1899 | * @internal |
| 1900 | * |
| 1901 | * @param string $url Unversioned URL |
| 1902 | * @return string |
| 1903 | */ |
| 1904 | public function getFilePageThumbUrl( $url ) { |
| 1905 | if ( $this->repo->isLocal() ) { |
| 1906 | return wfAppendQuery( $url, urlencode( $this->getTimestamp() ) ); |
| 1907 | } else { |
| 1908 | return $url; |
| 1909 | } |
| 1910 | } |
| 1911 | |
| 1912 | /** |
| 1913 | * Get the URL of the transcoded directory, or a particular file if $suffix is specified |
| 1914 | * |
| 1915 | * @param string|false $suffix If not false, the name of a media file |
| 1916 | * @return string Path |
| 1917 | */ |
| 1918 | public function getTranscodedUrl( $suffix = false ) { |
| 1919 | return $this->getZoneUrl( 'transcoded', $suffix ); |
| 1920 | } |
| 1921 | |
| 1922 | /** |
| 1923 | * Get the public zone virtual URL for a current version source file |
| 1924 | * @stable to override |
| 1925 | * |
| 1926 | * @param string|false $suffix If not false, the name of a thumbnail file |
| 1927 | * @return string |
| 1928 | */ |
| 1929 | public function getVirtualUrl( $suffix = false ) { |
| 1930 | $this->assertRepoDefined(); |
| 1931 | $path = $this->repo->getVirtualUrl() . '/public/' . $this->getUrlRel(); |
| 1932 | if ( $suffix !== false ) { |
| 1933 | $path .= '/' . rawurlencode( $suffix ); |
| 1934 | } |
| 1935 | |
| 1936 | return $path; |
| 1937 | } |
| 1938 | |
| 1939 | /** |
| 1940 | * Get the public zone virtual URL for an archived version source file |
| 1941 | * @stable to override |
| 1942 | * |
| 1943 | * @param string|false $suffix If not false, the name of a thumbnail file |
| 1944 | * @return string |
| 1945 | */ |
| 1946 | public function getArchiveVirtualUrl( $suffix = false ) { |
| 1947 | $this->assertRepoDefined(); |
| 1948 | $path = $this->repo->getVirtualUrl() . '/public/archive/' . $this->getHashPath(); |
| 1949 | if ( $suffix === false ) { |
| 1950 | $path = rtrim( $path, '/' ); |
| 1951 | } else { |
| 1952 | $path .= rawurlencode( $suffix ); |
| 1953 | } |
| 1954 | |
| 1955 | return $path; |
| 1956 | } |
| 1957 | |
| 1958 | /** |
| 1959 | * Get the virtual URL for a thumbnail file or directory |
| 1960 | * @stable to override |
| 1961 | * |
| 1962 | * @param string|false $suffix If not false, the name of a thumbnail file |
| 1963 | * @return string |
| 1964 | */ |
| 1965 | public function getThumbVirtualUrl( $suffix = false ) { |
| 1966 | $this->assertRepoDefined(); |
| 1967 | $path = $this->repo->getVirtualUrl() . '/thumb/' . $this->getUrlRel(); |
| 1968 | if ( $suffix !== false ) { |
| 1969 | $path .= '/' . rawurlencode( $suffix ); |
| 1970 | } |
| 1971 | |
| 1972 | return $path; |
| 1973 | } |
| 1974 | |
| 1975 | /** |
| 1976 | * @return bool |
| 1977 | */ |
| 1978 | protected function isHashed() { |
| 1979 | $this->assertRepoDefined(); |
| 1980 | |
| 1981 | return (bool)$this->repo->getHashLevels(); |
| 1982 | } |
| 1983 | |
| 1984 | /** |
| 1985 | * @return never |
| 1986 | */ |
| 1987 | protected function readOnlyError() { |
| 1988 | throw new LogicException( static::class . ': write operations are not supported' ); |
| 1989 | } |
| 1990 | |
| 1991 | /** |
| 1992 | * Move or copy a file to its public location. If a file exists at the |
| 1993 | * destination, move it to an archive. Returns a Status object with |
| 1994 | * the archive name in the "value" member on success. |
| 1995 | * |
| 1996 | * The archive name should be passed through to recordUpload3 for database |
| 1997 | * registration. |
| 1998 | * |
| 1999 | * Options to $options include: |
| 2000 | * - headers : name/value map of HTTP headers to use in response to GET/HEAD requests |
| 2001 | * |
| 2002 | * @param string|FSFile $src Local filesystem path to the source image |
| 2003 | * @param int $flags A bitwise combination of: |
| 2004 | * File::DELETE_SOURCE Delete the source file, i.e. move rather than copy |
| 2005 | * @param array $options Optional additional parameters |
| 2006 | * @return Status On success, the value member contains the |
| 2007 | * archive name, or an empty string if it was a new file. |
| 2008 | * |
| 2009 | * STUB |
| 2010 | * Overridden by LocalFile |
| 2011 | * @stable to override |
| 2012 | */ |
| 2013 | public function publish( $src, $flags = 0, array $options = [] ) { |
| 2014 | $this->readOnlyError(); |
| 2015 | } |
| 2016 | |
| 2017 | /** |
| 2018 | * @param IContextSource|false $context |
| 2019 | * @return array[]|false |
| 2020 | */ |
| 2021 | public function formatMetadata( $context = false ) { |
| 2022 | $handler = $this->getHandler(); |
| 2023 | return $handler ? $handler->formatMetadata( $this, $context ) : false; |
| 2024 | } |
| 2025 | |
| 2026 | /** |
| 2027 | * Returns true if the file comes from the local file repository. |
| 2028 | * |
| 2029 | * @return bool |
| 2030 | */ |
| 2031 | public function isLocal() { |
| 2032 | return $this->repo && $this->repo->isLocal(); |
| 2033 | } |
| 2034 | |
| 2035 | /** |
| 2036 | * Returns the name of the repository. |
| 2037 | * |
| 2038 | * @return string |
| 2039 | */ |
| 2040 | public function getRepoName() { |
| 2041 | return $this->repo ? $this->repo->getName() : 'unknown'; |
| 2042 | } |
| 2043 | |
| 2044 | /** |
| 2045 | * Returns the repository |
| 2046 | * @stable to override |
| 2047 | * |
| 2048 | * @return FileRepo|false |
| 2049 | */ |
| 2050 | public function getRepo() { |
| 2051 | return $this->repo; |
| 2052 | } |
| 2053 | |
| 2054 | /** |
| 2055 | * Returns true if the image is an old version |
| 2056 | * STUB |
| 2057 | * |
| 2058 | * @stable to override |
| 2059 | * @return bool |
| 2060 | */ |
| 2061 | public function isOld() { |
| 2062 | return false; |
| 2063 | } |
| 2064 | |
| 2065 | /** |
| 2066 | * Is this file a "deleted" file in a private archive? |
| 2067 | * STUB |
| 2068 | * |
| 2069 | * @stable to override |
| 2070 | * @param int $field One of DELETED_* bitfield constants |
| 2071 | * @return bool |
| 2072 | */ |
| 2073 | public function isDeleted( $field ) { |
| 2074 | return false; |
| 2075 | } |
| 2076 | |
| 2077 | /** |
| 2078 | * Return the deletion bitfield |
| 2079 | * STUB |
| 2080 | * @stable to override |
| 2081 | * @return int |
| 2082 | */ |
| 2083 | public function getVisibility() { |
| 2084 | return 0; |
| 2085 | } |
| 2086 | |
| 2087 | /** |
| 2088 | * Was this file ever deleted from the wiki? |
| 2089 | * |
| 2090 | * @return bool |
| 2091 | */ |
| 2092 | public function wasDeleted() { |
| 2093 | $title = $this->getTitle(); |
| 2094 | |
| 2095 | return $title && $title->hasDeletedEdits(); |
| 2096 | } |
| 2097 | |
| 2098 | /** |
| 2099 | * Move file to the new title |
| 2100 | * |
| 2101 | * Move current, old version and all thumbnails |
| 2102 | * to the new filename. Old file is deleted. |
| 2103 | * |
| 2104 | * Cache purging is done; checks for validity |
| 2105 | * and logging are caller's responsibility |
| 2106 | * |
| 2107 | * @stable to override |
| 2108 | * @param Title $target New file name |
| 2109 | * @return Status |
| 2110 | */ |
| 2111 | public function move( $target ) { |
| 2112 | $this->readOnlyError(); |
| 2113 | } |
| 2114 | |
| 2115 | /** |
| 2116 | * Delete all versions of the file. |
| 2117 | * |
| 2118 | * @since 1.35 |
| 2119 | * |
| 2120 | * Moves the files into an archive directory (or deletes them) |
| 2121 | * and removes the database rows. |
| 2122 | * |
| 2123 | * Cache purging is done; logging is caller's responsibility. |
| 2124 | * |
| 2125 | * @param string $reason |
| 2126 | * @param UserIdentity $user |
| 2127 | * @param bool $suppress Hide content from sysops? |
| 2128 | * @return Status |
| 2129 | * STUB |
| 2130 | * Overridden by LocalFile |
| 2131 | * @stable to override |
| 2132 | */ |
| 2133 | public function deleteFile( $reason, UserIdentity $user, $suppress = false ) { |
| 2134 | $this->readOnlyError(); |
| 2135 | } |
| 2136 | |
| 2137 | /** |
| 2138 | * Restore all or specified deleted revisions to the given file. |
| 2139 | * Permissions and logging are left to the caller. |
| 2140 | * |
| 2141 | * May throw database exceptions on error. |
| 2142 | * |
| 2143 | * @param int[] $versions Set of record ids of deleted items to restore, |
| 2144 | * or empty to restore all revisions. |
| 2145 | * @param bool $unsuppress Remove restrictions on content upon restoration? |
| 2146 | * @return Status |
| 2147 | * STUB |
| 2148 | * Overridden by LocalFile |
| 2149 | * @stable to override |
| 2150 | */ |
| 2151 | public function restore( $versions = [], $unsuppress = false ) { |
| 2152 | $this->readOnlyError(); |
| 2153 | } |
| 2154 | |
| 2155 | /** |
| 2156 | * Returns 'true' if this file is a type which supports multiple pages, |
| 2157 | * e.g. DJVU or PDF. Note that this may be true even if the file in |
| 2158 | * question only has a single page. |
| 2159 | * |
| 2160 | * @stable to override |
| 2161 | * @return bool |
| 2162 | */ |
| 2163 | public function isMultipage() { |
| 2164 | return $this->getHandler() && $this->handler->isMultiPage( $this ); |
| 2165 | } |
| 2166 | |
| 2167 | /** |
| 2168 | * Returns the number of pages of a multipage document, or false for |
| 2169 | * documents which aren't multipage documents |
| 2170 | * |
| 2171 | * @stable to override |
| 2172 | * @return int|false |
| 2173 | */ |
| 2174 | public function pageCount() { |
| 2175 | if ( !isset( $this->pageCount ) ) { |
| 2176 | if ( $this->getHandler() && $this->handler->isMultiPage( $this ) ) { |
| 2177 | $this->pageCount = $this->handler->pageCount( $this ); |
| 2178 | } else { |
| 2179 | $this->pageCount = false; |
| 2180 | } |
| 2181 | } |
| 2182 | |
| 2183 | return $this->pageCount; |
| 2184 | } |
| 2185 | |
| 2186 | /** |
| 2187 | * Calculate the height of a thumbnail using the source and destination width |
| 2188 | * |
| 2189 | * @param int $srcWidth |
| 2190 | * @param int $srcHeight |
| 2191 | * @param int $dstWidth |
| 2192 | * |
| 2193 | * @return int |
| 2194 | */ |
| 2195 | public static function scaleHeight( $srcWidth, $srcHeight, $dstWidth ) { |
| 2196 | // Exact integer multiply followed by division |
| 2197 | if ( $srcWidth == 0 ) { |
| 2198 | return 0; |
| 2199 | } else { |
| 2200 | return (int)round( $srcHeight * $dstWidth / $srcWidth ); |
| 2201 | } |
| 2202 | } |
| 2203 | |
| 2204 | /** |
| 2205 | * Get the URL of the image description page. May return false if it is |
| 2206 | * unknown or not applicable. |
| 2207 | * |
| 2208 | * @stable to override |
| 2209 | * @return string|false |
| 2210 | */ |
| 2211 | public function getDescriptionUrl() { |
| 2212 | if ( $this->repo ) { |
| 2213 | return $this->repo->getDescriptionUrl( $this->getName() ); |
| 2214 | } else { |
| 2215 | return false; |
| 2216 | } |
| 2217 | } |
| 2218 | |
| 2219 | /** |
| 2220 | * Get the HTML text of the description page, if available |
| 2221 | * @stable to override |
| 2222 | * |
| 2223 | * @param Language|null $lang Optional language to fetch description in |
| 2224 | * @return string|false HTML |
| 2225 | * @return-taint escaped |
| 2226 | */ |
| 2227 | public function getDescriptionText( Language $lang = null ) { |
| 2228 | global $wgLang; |
| 2229 | |
| 2230 | if ( !$this->repo || !$this->repo->fetchDescription ) { |
| 2231 | return false; |
| 2232 | } |
| 2233 | |
| 2234 | $lang ??= $wgLang; |
| 2235 | |
| 2236 | $renderUrl = $this->repo->getDescriptionRenderUrl( $this->getName(), $lang->getCode() ); |
| 2237 | if ( $renderUrl ) { |
| 2238 | $cache = MediaWikiServices::getInstance()->getMainWANObjectCache(); |
| 2239 | $key = $this->repo->getLocalCacheKey( |
| 2240 | 'file-remote-description', |
| 2241 | $lang->getCode(), |
| 2242 | md5( $this->getName() ) |
| 2243 | ); |
| 2244 | $fname = __METHOD__; |
| 2245 | |
| 2246 | return $cache->getWithSetCallback( |
| 2247 | $key, |
| 2248 | $this->repo->descriptionCacheExpiry ?: $cache::TTL_UNCACHEABLE, |
| 2249 | static function ( $oldValue, &$ttl, array &$setOpts ) use ( $renderUrl, $fname ) { |
| 2250 | wfDebug( "Fetching shared description from $renderUrl" ); |
| 2251 | $res = MediaWikiServices::getInstance()->getHttpRequestFactory()-> |
| 2252 | get( $renderUrl, [], $fname ); |
| 2253 | if ( !$res ) { |
| 2254 | $ttl = WANObjectCache::TTL_UNCACHEABLE; |
| 2255 | } |
| 2256 | |
| 2257 | return $res; |
| 2258 | } |
| 2259 | ); |
| 2260 | } |
| 2261 | |
| 2262 | return false; |
| 2263 | } |
| 2264 | |
| 2265 | /** |
| 2266 | * Get the identity of the file uploader. |
| 2267 | * |
| 2268 | * @note if the file does not exist, this will return null regardless of the permissions. |
| 2269 | * |
| 2270 | * @stable to override |
| 2271 | * @since 1.37 |
| 2272 | * @param int $audience One of: |
| 2273 | * File::FOR_PUBLIC to be displayed to all users |
| 2274 | * File::FOR_THIS_USER to be displayed to the given user |
| 2275 | * File::RAW get the description regardless of permissions |
| 2276 | * @param Authority|null $performer to check for, only if FOR_THIS_USER is |
| 2277 | * passed to the $audience parameter |
| 2278 | * @return UserIdentity|null |
| 2279 | */ |
| 2280 | public function getUploader( int $audience = self::FOR_PUBLIC, Authority $performer = null ): ?UserIdentity { |
| 2281 | return null; |
| 2282 | } |
| 2283 | |
| 2284 | /** |
| 2285 | * Get description of file revision |
| 2286 | * STUB |
| 2287 | * |
| 2288 | * @stable to override |
| 2289 | * @param int $audience One of: |
| 2290 | * File::FOR_PUBLIC to be displayed to all users |
| 2291 | * File::FOR_THIS_USER to be displayed to the given user |
| 2292 | * File::RAW get the description regardless of permissions |
| 2293 | * @param Authority|null $performer to check for, only if FOR_THIS_USER is |
| 2294 | * passed to the $audience parameter |
| 2295 | * @return null|string |
| 2296 | */ |
| 2297 | public function getDescription( $audience = self::FOR_PUBLIC, Authority $performer = null ) { |
| 2298 | return null; |
| 2299 | } |
| 2300 | |
| 2301 | /** |
| 2302 | * Get the 14-character timestamp of the file upload |
| 2303 | * |
| 2304 | * @stable to override |
| 2305 | * @return string|false TS_MW timestamp or false on failure |
| 2306 | */ |
| 2307 | public function getTimestamp() { |
| 2308 | $this->assertRepoDefined(); |
| 2309 | |
| 2310 | return $this->repo->getFileTimestamp( $this->getPath() ); |
| 2311 | } |
| 2312 | |
| 2313 | /** |
| 2314 | * Returns the timestamp (in TS_MW format) of the last change of the description page. |
| 2315 | * Returns false if the file does not have a description page, or retrieving the timestamp |
| 2316 | * would be expensive. |
| 2317 | * @since 1.25 |
| 2318 | * @stable to override |
| 2319 | * @return string|false |
| 2320 | */ |
| 2321 | public function getDescriptionTouched() { |
| 2322 | return false; |
| 2323 | } |
| 2324 | |
| 2325 | /** |
| 2326 | * Get the SHA-1 base 36 hash of the file |
| 2327 | * |
| 2328 | * @stable to override |
| 2329 | * @return string|false |
| 2330 | */ |
| 2331 | public function getSha1() { |
| 2332 | $this->assertRepoDefined(); |
| 2333 | |
| 2334 | return $this->repo->getFileSha1( $this->getPath() ); |
| 2335 | } |
| 2336 | |
| 2337 | /** |
| 2338 | * Get the deletion archive key, "<sha1>.<ext>" |
| 2339 | * |
| 2340 | * @return string|false |
| 2341 | */ |
| 2342 | public function getStorageKey() { |
| 2343 | $hash = $this->getSha1(); |
| 2344 | if ( !$hash ) { |
| 2345 | return false; |
| 2346 | } |
| 2347 | $ext = $this->getExtension(); |
| 2348 | $dotExt = $ext === '' ? '' : ".$ext"; |
| 2349 | |
| 2350 | return $hash . $dotExt; |
| 2351 | } |
| 2352 | |
| 2353 | /** |
| 2354 | * Determine if the current user is allowed to view a particular |
| 2355 | * field of this file, if it's marked as deleted. |
| 2356 | * STUB |
| 2357 | * @stable to override |
| 2358 | * @param int $field |
| 2359 | * @param Authority $performer user object to check |
| 2360 | * @return bool |
| 2361 | */ |
| 2362 | public function userCan( $field, Authority $performer ) { |
| 2363 | return true; |
| 2364 | } |
| 2365 | |
| 2366 | /** |
| 2367 | * @return string[] HTTP header name/value map to use for HEAD/GET request responses |
| 2368 | * @since 1.30 |
| 2369 | */ |
| 2370 | public function getContentHeaders() { |
| 2371 | $handler = $this->getHandler(); |
| 2372 | if ( $handler ) { |
| 2373 | return $handler->getContentHeaders( $this->getMetadataArray() ); |
| 2374 | } |
| 2375 | |
| 2376 | return []; |
| 2377 | } |
| 2378 | |
| 2379 | /** |
| 2380 | * @return string |
| 2381 | */ |
| 2382 | public function getLongDesc() { |
| 2383 | $handler = $this->getHandler(); |
| 2384 | if ( $handler ) { |
| 2385 | return $handler->getLongDesc( $this ); |
| 2386 | } else { |
| 2387 | return MediaHandler::getGeneralLongDesc( $this ); |
| 2388 | } |
| 2389 | } |
| 2390 | |
| 2391 | /** |
| 2392 | * @return string |
| 2393 | */ |
| 2394 | public function getShortDesc() { |
| 2395 | $handler = $this->getHandler(); |
| 2396 | if ( $handler ) { |
| 2397 | return $handler->getShortDesc( $this ); |
| 2398 | } else { |
| 2399 | return MediaHandler::getGeneralShortDesc( $this ); |
| 2400 | } |
| 2401 | } |
| 2402 | |
| 2403 | /** |
| 2404 | * @return string |
| 2405 | */ |
| 2406 | public function getDimensionsString() { |
| 2407 | $handler = $this->getHandler(); |
| 2408 | if ( $handler ) { |
| 2409 | return $handler->getDimensionsString( $this ); |
| 2410 | } else { |
| 2411 | return ''; |
| 2412 | } |
| 2413 | } |
| 2414 | |
| 2415 | /** |
| 2416 | * @return ?string The name that was used to access the file, before |
| 2417 | * resolving redirects. |
| 2418 | */ |
| 2419 | public function getRedirected(): ?string { |
| 2420 | return $this->redirected; |
| 2421 | } |
| 2422 | |
| 2423 | /** |
| 2424 | * @return Title|null |
| 2425 | */ |
| 2426 | protected function getRedirectedTitle() { |
| 2427 | if ( $this->redirected !== null ) { |
| 2428 | if ( !$this->redirectTitle ) { |
| 2429 | $this->redirectTitle = Title::makeTitle( NS_FILE, $this->redirected ); |
| 2430 | } |
| 2431 | |
| 2432 | return $this->redirectTitle; |
| 2433 | } |
| 2434 | |
| 2435 | return null; |
| 2436 | } |
| 2437 | |
| 2438 | /** |
| 2439 | * @param string $from The name that was used to access the file, before |
| 2440 | * resolving redirects. |
| 2441 | */ |
| 2442 | public function redirectedFrom( string $from ) { |
| 2443 | $this->redirected = $from; |
| 2444 | } |
| 2445 | |
| 2446 | /** |
| 2447 | * @stable to override |
| 2448 | * @return bool |
| 2449 | */ |
| 2450 | public function isMissing() { |
| 2451 | return false; |
| 2452 | } |
| 2453 | |
| 2454 | /** |
| 2455 | * Check if this file object is small and can be cached |
| 2456 | * @stable to override |
| 2457 | * @return bool |
| 2458 | */ |
| 2459 | public function isCacheable() { |
| 2460 | return true; |
| 2461 | } |
| 2462 | |
| 2463 | /** |
| 2464 | * Assert that $this->repo is set to a valid FileRepo instance |
| 2465 | */ |
| 2466 | protected function assertRepoDefined() { |
| 2467 | if ( !( $this->repo instanceof $this->repoClass ) ) { |
| 2468 | throw new LogicException( "A {$this->repoClass} object is not set for this File.\n" ); |
| 2469 | } |
| 2470 | } |
| 2471 | |
| 2472 | /** |
| 2473 | * Assert that $this->title is set to a Title |
| 2474 | */ |
| 2475 | protected function assertTitleDefined() { |
| 2476 | if ( !( $this->title instanceof Title ) ) { |
| 2477 | throw new LogicException( "A Title object is not set for this File.\n" ); |
| 2478 | } |
| 2479 | } |
| 2480 | |
| 2481 | /** |
| 2482 | * True if creating thumbnails from the file is large or otherwise resource-intensive. |
| 2483 | * @return bool |
| 2484 | */ |
| 2485 | public function isExpensiveToThumbnail() { |
| 2486 | $handler = $this->getHandler(); |
| 2487 | return $handler && $handler->isExpensiveToThumbnail( $this ); |
| 2488 | } |
| 2489 | |
| 2490 | /** |
| 2491 | * Whether the thumbnails created on the same server as this code is running. |
| 2492 | * @since 1.25 |
| 2493 | * @stable to override |
| 2494 | * @return bool |
| 2495 | */ |
| 2496 | public function isTransformedLocally() { |
| 2497 | return true; |
| 2498 | } |
| 2499 | } |