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1 |
1 | <?php |
2 | /** |
3 | * This program is free software; you can redistribute it and/or modify |
4 | * it under the terms of the GNU General Public License as published by |
5 | * the Free Software Foundation; either version 2 of the License, or |
6 | * (at your option) any later version. |
7 | * |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
11 | * GNU General Public License for more details. |
12 | * |
13 | * You should have received a copy of the GNU General Public License along |
14 | * with this program; if not, write to the Free Software Foundation, Inc., |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
16 | * http://www.gnu.org/copyleft/gpl.html |
17 | * |
18 | * @file |
19 | * @author Roan Kattouw |
20 | * @author Trevor Parscal |
21 | */ |
22 | |
23 | namespace MediaWiki\ResourceLoader; |
24 | |
25 | use BagOStuff; |
26 | use Exception; |
27 | use ExtensionRegistry; |
28 | use HashBagOStuff; |
29 | use HttpStatus; |
30 | use InvalidArgumentException; |
31 | use Less_Environment; |
32 | use Less_Parser; |
33 | use LogicException; |
34 | use MediaWiki\CommentStore\CommentStore; |
35 | use MediaWiki\Config\Config; |
36 | use MediaWiki\Deferred\DeferredUpdates; |
37 | use MediaWiki\HookContainer\HookContainer; |
38 | use MediaWiki\Html\Html; |
39 | use MediaWiki\Html\HtmlJsCode; |
40 | use MediaWiki\MainConfigNames; |
41 | use MediaWiki\MediaWikiServices; |
42 | use MediaWiki\Output\OutputPage; |
43 | use MediaWiki\Profiler\ProfilingContext; |
44 | use MediaWiki\Request\HeaderCallback; |
45 | use MediaWiki\Request\WebRequest; |
46 | use MediaWiki\Title\Title; |
47 | use MediaWiki\User\Options\UserOptionsLookup; |
48 | use MediaWiki\WikiMap\WikiMap; |
49 | use MWExceptionHandler; |
50 | use MWExceptionRenderer; |
51 | use Net_URL2; |
52 | use ObjectCache; |
53 | use Psr\Log\LoggerAwareInterface; |
54 | use Psr\Log\LoggerInterface; |
55 | use Psr\Log\NullLogger; |
56 | use RuntimeException; |
57 | use stdClass; |
58 | use Throwable; |
59 | use UnexpectedValueException; |
60 | use Wikimedia\DependencyStore\DependencyStore; |
61 | use Wikimedia\DependencyStore\KeyValueDependencyStore; |
62 | use Wikimedia\Minify\CSSMin; |
63 | use Wikimedia\Minify\IdentityMinifierState; |
64 | use Wikimedia\Minify\IndexMap; |
65 | use Wikimedia\Minify\IndexMapOffset; |
66 | use Wikimedia\Minify\JavaScriptMapperState; |
67 | use Wikimedia\Minify\JavaScriptMinifier; |
68 | use Wikimedia\Minify\JavaScriptMinifierState; |
69 | use Wikimedia\Minify\MinifierState; |
70 | use Wikimedia\RequestTimeout\TimeoutException; |
71 | use Wikimedia\ScopedCallback; |
72 | use Wikimedia\Stats\StatsFactory; |
73 | use Wikimedia\Timestamp\ConvertibleTimestamp; |
74 | use Wikimedia\WrappedString; |
75 | |
76 | /** |
77 | * @defgroup ResourceLoader ResourceLoader |
78 | * |
79 | * For higher level documentation, see <https://www.mediawiki.org/wiki/ResourceLoader/Architecture>. |
80 | */ |
81 | |
82 | /** |
83 | * @defgroup ResourceLoaderHooks ResourceLoader Hooks |
84 | * @ingroup ResourceLoader |
85 | * @ingroup Hooks |
86 | */ |
87 | |
88 | /** |
89 | * ResourceLoader is a loading system for JavaScript and CSS resources. |
90 | * |
91 | * For higher level documentation, see <https://www.mediawiki.org/wiki/ResourceLoader/Architecture>. |
92 | * |
93 | * @ingroup ResourceLoader |
94 | * @since 1.17 |
95 | */ |
96 | class ResourceLoader implements LoggerAwareInterface { |
97 | /** @var int */ |
98 | public const CACHE_VERSION = 9; |
99 | /** @var string JavaScript / CSS pragma to disable minification. * */ |
100 | public const FILTER_NOMIN = '/*@nomin*/'; |
101 | |
102 | /** @var string */ |
103 | private const RL_DEP_STORE_PREFIX = 'ResourceLoaderModule'; |
104 | /** @var int How long to preserve indirect dependency metadata in our backend store. */ |
105 | private const RL_MODULE_DEP_TTL = BagOStuff::TTL_YEAR; |
106 | /** @var int */ |
107 | private const MAXAGE_RECOVER = 60; |
108 | |
109 | /** @var int|null */ |
110 | protected static $debugMode = null; |
111 | |
112 | /** @var Config */ |
113 | private $config; |
114 | /** @var MessageBlobStore */ |
115 | private $blobStore; |
116 | /** @var DependencyStore */ |
117 | private $depStore; |
118 | /** @var LoggerInterface */ |
119 | private $logger; |
120 | /** @var HookContainer */ |
121 | private $hookContainer; |
122 | /** @var BagOStuff */ |
123 | private $srvCache; |
124 | /** @var StatsFactory */ |
125 | private $statsFactory; |
126 | /** @var int */ |
127 | private $maxageVersioned; |
128 | /** @var int */ |
129 | private $maxageUnversioned; |
130 | |
131 | /** @var Module[] Map of (module name => Module) */ |
132 | private $modules = []; |
133 | /** @var array[] Map of (module name => associative info array) */ |
134 | private $moduleInfos = []; |
135 | /** @var string[] List of module names that contain QUnit tests */ |
136 | private $testModuleNames = []; |
137 | /** @var string[] Map of (source => path); E.g. [ 'source-id' => 'http://.../load.php' ] */ |
138 | private $sources = []; |
139 | /** @var array Errors accumulated during a respond() call. Exposed for testing. */ |
140 | protected $errors = []; |
141 | /** |
142 | * @var string[] Buffer for extra response headers during a makeModuleResponse() call. |
143 | * Exposed for testing. |
144 | */ |
145 | protected $extraHeaders = []; |
146 | /** @var array Map of (module-variant => buffered DependencyStore updates) */ |
147 | private $depStoreUpdateBuffer = []; |
148 | /** |
149 | * @var array Styles that are skin-specific and supplement or replace the |
150 | * default skinStyles of a FileModule. See $wgResourceModuleSkinStyles. |
151 | */ |
152 | private $moduleSkinStyles = []; |
153 | |
154 | /** |
155 | * @internal For ServiceWiring only (TODO: Make stable as part of T32956). |
156 | * @param Config $config Generic pass-through for use by extension callbacks |
157 | * and other MediaWiki-specific module classes. |
158 | * @param LoggerInterface|null $logger [optional] |
159 | * @param DependencyStore|null $tracker [optional] |
160 | * @param array $params [optional] |
161 | * - loadScript: URL path to the load.php entrypoint. |
162 | * Default: `'/load.php'`. |
163 | * - maxageVersioned: HTTP cache max-age in seconds for URLs with a "version" parameter. |
164 | * This applies to most load.php responses, and may have a long duration (e.g. weeks or |
165 | * months), because a change in the module bundle will naturally produce a different URL |
166 | * and thus automatically bust the CDN and web browser caches. |
167 | * Default: 30 days. |
168 | * - maxageUnversioned: HTTP cache max-age in seconds for URLs without a "version" parameter. |
169 | * This should have a short duration (e.g. minutes), and affects the startup manifest which |
170 | * controls how quickly changes (in the module registry, dependency tree, or module content) |
171 | * will propagate to clients. |
172 | * Default: 5 minutes. |
173 | */ |
174 | public function __construct( |
175 | Config $config, |
176 | LoggerInterface $logger = null, |
177 | DependencyStore $tracker = null, |
178 | array $params = [] |
179 | ) { |
180 | $this->maxageVersioned = $params['maxageVersioned'] ?? 30 * 24 * 60 * 60; |
181 | $this->maxageUnversioned = $params['maxageUnversioned'] ?? 5 * 60; |
182 | |
183 | $this->config = $config; |
184 | $this->logger = $logger ?: new NullLogger(); |
185 | |
186 | $services = MediaWikiServices::getInstance(); |
187 | $this->hookContainer = $services->getHookContainer(); |
188 | |
189 | $this->srvCache = $services->getLocalServerObjectCache(); |
190 | $this->statsFactory = $services->getStatsFactory(); |
191 | |
192 | // Add 'local' source first |
193 | $this->addSource( 'local', $params['loadScript'] ?? '/load.php' ); |
194 | |
195 | // Special module that always exists |
196 | $this->register( 'startup', [ 'class' => StartUpModule::class ] ); |
197 | |
198 | $this->setMessageBlobStore( |
199 | new MessageBlobStore( $this, $this->logger, $services->getMainWANObjectCache() ) |
200 | ); |
201 | |
202 | $tracker = $tracker ?: new KeyValueDependencyStore( new HashBagOStuff() ); |
203 | $this->setDependencyStore( $tracker ); |
204 | } |
205 | |
206 | /** |
207 | * @return Config |
208 | */ |
209 | public function getConfig() { |
210 | return $this->config; |
211 | } |
212 | |
213 | /** |
214 | * @since 1.26 |
215 | * @param LoggerInterface $logger |
216 | */ |
217 | public function setLogger( LoggerInterface $logger ) { |
218 | $this->logger = $logger; |
219 | } |
220 | |
221 | /** |
222 | * @since 1.27 |
223 | * @return LoggerInterface |
224 | */ |
225 | public function getLogger() { |
226 | return $this->logger; |
227 | } |
228 | |
229 | /** |
230 | * @since 1.26 |
231 | * @return MessageBlobStore |
232 | */ |
233 | public function getMessageBlobStore() { |
234 | return $this->blobStore; |
235 | } |
236 | |
237 | /** |
238 | * @since 1.25 |
239 | * @param MessageBlobStore $blobStore |
240 | */ |
241 | public function setMessageBlobStore( MessageBlobStore $blobStore ) { |
242 | $this->blobStore = $blobStore; |
243 | } |
244 | |
245 | /** |
246 | * @since 1.35 |
247 | * @param DependencyStore $tracker |
248 | */ |
249 | public function setDependencyStore( DependencyStore $tracker ) { |
250 | $this->depStore = $tracker; |
251 | } |
252 | |
253 | /** |
254 | * @internal For use by ServiceWiring.php |
255 | * @param array $moduleSkinStyles |
256 | */ |
257 | public function setModuleSkinStyles( array $moduleSkinStyles ) { |
258 | $this->moduleSkinStyles = $moduleSkinStyles; |
259 | } |
260 | |
261 | /** |
262 | * Register a module with the ResourceLoader system. |
263 | * |
264 | * @see $wgResourceModules for the available options. |
265 | * @param string|array[] $name Module name as a string or, array of module info arrays |
266 | * keyed by name. |
267 | * @param array|null $info Module info array. When using the first parameter to register |
268 | * multiple modules at once, this parameter is optional. |
269 | * @throws InvalidArgumentException If a module name contains illegal characters (pipes or commas) |
270 | * @throws InvalidArgumentException If the module info is not an array |
271 | */ |
272 | public function register( $name, array $info = null ) { |
273 | // Allow multiple modules to be registered in one call |
274 | $registrations = is_array( $name ) ? $name : [ $name => $info ]; |
275 | foreach ( $registrations as $name => $info ) { |
276 | // Warn on duplicate registrations |
277 | if ( isset( $this->moduleInfos[$name] ) ) { |
278 | // A module has already been registered by this name |
279 | $this->logger->warning( |
280 | 'ResourceLoader duplicate registration warning. ' . |
281 | 'Another module has already been registered as ' . $name |
282 | ); |
283 | } |
284 | |
285 | // Check validity |
286 | if ( !self::isValidModuleName( $name ) ) { |
287 | throw new InvalidArgumentException( "ResourceLoader module name '$name' is invalid, " |
288 | . "see ResourceLoader::isValidModuleName()" ); |
289 | } |
290 | if ( !is_array( $info ) ) { |
291 | throw new InvalidArgumentException( |
292 | 'Invalid module info for "' . $name . '": expected array, got ' . gettype( $info ) |
293 | ); |
294 | } |
295 | |
296 | // Attach module |
297 | $this->moduleInfos[$name] = $info; |
298 | } |
299 | } |
300 | |
301 | /** |
302 | * @internal For use by ServiceWiring only |
303 | * @codeCoverageIgnore |
304 | */ |
305 | public function registerTestModules(): void { |
306 | $extRegistry = ExtensionRegistry::getInstance(); |
307 | $testModules = $extRegistry->getAttribute( 'QUnitTestModules' ); |
308 | |
309 | $testModuleNames = []; |
310 | foreach ( $testModules as $name => &$module ) { |
311 | // Turn any single-module dependency into an array |
312 | if ( isset( $module['dependencies'] ) && is_string( $module['dependencies'] ) ) { |
313 | $module['dependencies'] = [ $module['dependencies'] ]; |
314 | } |
315 | |
316 | // Ensure the testrunner loads before any tests |
317 | $module['dependencies'][] = 'mediawiki.qunit-testrunner'; |
318 | |
319 | // Keep track of the modules to load on SpecialJavaScriptTest |
320 | $testModuleNames[] = $name; |
321 | } |
322 | |
323 | // Core test modules (their names have further precedence). |
324 | $testModules = ( include MW_INSTALL_PATH . '/tests/qunit/QUnitTestResources.php' ) + $testModules; |
325 | $testModuleNames[] = 'test.MediaWiki'; |
326 | |
327 | $this->register( $testModules ); |
328 | $this->testModuleNames = $testModuleNames; |
329 | } |
330 | |
331 | /** |
332 | * Add a foreign source of modules. |
333 | * |
334 | * Source IDs are typically the same as the Wiki ID or database name (e.g. lowercase a-z). |
335 | * |
336 | * @param array|string $sources Source ID (string), or [ id1 => loadUrl, id2 => loadUrl, ... ] |
337 | * @param string|array|null $loadUrl load.php url (string), or array with loadUrl key for |
338 | * backwards-compatibility. |
339 | * @throws InvalidArgumentException If array-form $loadUrl lacks a 'loadUrl' key. |
340 | */ |
341 | public function addSource( $sources, $loadUrl = null ) { |
342 | if ( !is_array( $sources ) ) { |
343 | $sources = [ $sources => $loadUrl ]; |
344 | } |
345 | foreach ( $sources as $id => $source ) { |
346 | // Disallow duplicates |
347 | if ( isset( $this->sources[$id] ) ) { |
348 | throw new RuntimeException( 'Cannot register source ' . $id . ' twice' ); |
349 | } |
350 | |
351 | // Support: MediaWiki 1.24 and earlier |
352 | if ( is_array( $source ) ) { |
353 | if ( !isset( $source['loadScript'] ) ) { |
354 | throw new InvalidArgumentException( 'Each source must have a "loadScript" key' ); |
355 | } |
356 | $source = $source['loadScript']; |
357 | } |
358 | |
359 | $this->sources[$id] = $source; |
360 | } |
361 | } |
362 | |
363 | /** |
364 | * @return string[] |
365 | */ |
366 | public function getModuleNames() { |
367 | return array_keys( $this->moduleInfos ); |
368 | } |
369 | |
370 | /** |
371 | * Get a list of modules with QUnit tests. |
372 | * |
373 | * @internal For use by SpecialJavaScriptTest only |
374 | * @return string[] |
375 | * @codeCoverageIgnore |
376 | */ |
377 | public function getTestSuiteModuleNames() { |
378 | return $this->testModuleNames; |
379 | } |
380 | |
381 | /** |
382 | * Check whether a ResourceLoader module is registered |
383 | * |
384 | * @since 1.25 |
385 | * @param string $name |
386 | * @return bool |
387 | */ |
388 | public function isModuleRegistered( $name ) { |
389 | return isset( $this->moduleInfos[$name] ); |
390 | } |
391 | |
392 | /** |
393 | * Get the Module object for a given module name. |
394 | * |
395 | * If an array of module parameters exists but a Module object has not yet |
396 | * been instantiated, this method will instantiate and cache that object such that |
397 | * subsequent calls simply return the same object. |
398 | * |
399 | * @param string $name Module name |
400 | * @return Module|null If module has been registered, return a |
401 | * Module instance. Otherwise, return null. |
402 | */ |
403 | public function getModule( $name ) { |
404 | if ( !isset( $this->modules[$name] ) ) { |
405 | if ( !isset( $this->moduleInfos[$name] ) ) { |
406 | // No such module |
407 | return null; |
408 | } |
409 | // Construct the requested module object |
410 | $info = $this->moduleInfos[$name]; |
411 | if ( isset( $info['factory'] ) ) { |
412 | /** @var Module $object */ |
413 | $object = call_user_func( $info['factory'], $info ); |
414 | } else { |
415 | $class = $info['class'] ?? FileModule::class; |
416 | /** @var Module $object */ |
417 | $object = new $class( $info ); |
418 | } |
419 | $object->setConfig( $this->getConfig() ); |
420 | $object->setLogger( $this->logger ); |
421 | $object->setHookContainer( $this->hookContainer ); |
422 | $object->setName( $name ); |
423 | $object->setDependencyAccessCallbacks( |
424 | [ $this, 'loadModuleDependenciesInternal' ], |
425 | [ $this, 'saveModuleDependenciesInternal' ] |
426 | ); |
427 | $object->setSkinStylesOverride( $this->moduleSkinStyles ); |
428 | $this->modules[$name] = $object; |
429 | } |
430 | |
431 | return $this->modules[$name]; |
432 | } |
433 | |
434 | /** |
435 | * Load information stored in the database and dependency tracking store about modules |
436 | * |
437 | * @param string[] $moduleNames |
438 | * @param Context $context ResourceLoader-specific context of the request |
439 | */ |
440 | public function preloadModuleInfo( array $moduleNames, Context $context ) { |
441 | // Load all tracked indirect file dependencies for the modules |
442 | $vary = Module::getVary( $context ); |
443 | $entitiesByModule = []; |
444 | foreach ( $moduleNames as $moduleName ) { |
445 | $entitiesByModule[$moduleName] = "$moduleName|$vary"; |
446 | } |
447 | $depsByEntity = $this->depStore->retrieveMulti( |
448 | self::RL_DEP_STORE_PREFIX, |
449 | $entitiesByModule |
450 | ); |
451 | // Inject the indirect file dependencies for all the modules |
452 | foreach ( $moduleNames as $moduleName ) { |
453 | $module = $this->getModule( $moduleName ); |
454 | if ( $module ) { |
455 | $entity = $entitiesByModule[$moduleName]; |
456 | $deps = $depsByEntity[$entity]; |
457 | $paths = Module::expandRelativePaths( $deps['paths'] ); |
458 | $module->setFileDependencies( $context, $paths ); |
459 | } |
460 | } |
461 | |
462 | WikiModule::preloadTitleInfo( $context, $moduleNames ); |
463 | |
464 | // Prime in-object cache for message blobs for modules with messages |
465 | $modulesWithMessages = []; |
466 | foreach ( $moduleNames as $moduleName ) { |
467 | $module = $this->getModule( $moduleName ); |
468 | if ( $module && $module->getMessages() ) { |
469 | $modulesWithMessages[$moduleName] = $module; |
470 | } |
471 | } |
472 | // Prime in-object cache for message blobs for modules with messages |
473 | $lang = $context->getLanguage(); |
474 | $store = $this->getMessageBlobStore(); |
475 | $blobs = $store->getBlobs( $modulesWithMessages, $lang ); |
476 | foreach ( $blobs as $moduleName => $blob ) { |
477 | $modulesWithMessages[$moduleName]->setMessageBlob( $blob, $lang ); |
478 | } |
479 | } |
480 | |
481 | /** |
482 | * @internal Exposed for letting getModule() pass the callable to DependencyStore |
483 | * @param string $moduleName |
484 | * @param string $variant Language/skin variant |
485 | * @return string[] List of absolute file paths |
486 | */ |
487 | public function loadModuleDependenciesInternal( $moduleName, $variant ) { |
488 | $deps = $this->depStore->retrieve( self::RL_DEP_STORE_PREFIX, "$moduleName|$variant" ); |
489 | |
490 | return Module::expandRelativePaths( $deps['paths'] ); |
491 | } |
492 | |
493 | /** |
494 | * @internal Exposed for letting getModule() pass the callable to DependencyStore |
495 | * @param string $moduleName |
496 | * @param string $variant Language/skin variant |
497 | * @param string[] $paths List of relative paths referenced during computation |
498 | * @param string[] $priorPaths List of relative paths tracked in the dependency store |
499 | */ |
500 | public function saveModuleDependenciesInternal( $moduleName, $variant, $paths, $priorPaths ) { |
501 | $hasPendingUpdate = (bool)$this->depStoreUpdateBuffer; |
502 | $entity = "$moduleName|$variant"; |
503 | |
504 | if ( array_diff( $paths, $priorPaths ) || array_diff( $priorPaths, $paths ) ) { |
505 | // Dependency store needs to be updated with the new path list |
506 | if ( $paths ) { |
507 | $deps = $this->depStore->newEntityDependencies( $paths, time() ); |
508 | $this->depStoreUpdateBuffer[$entity] = $deps; |
509 | } else { |
510 | $this->depStoreUpdateBuffer[$entity] = null; |
511 | } |
512 | } |
513 | |
514 | // If paths were unchanged, leave the dependency store unchanged also. |
515 | // The entry will eventually expire, after which we will briefly issue an incomplete |
516 | // version hash for a 5-min startup window, the module then recomputes and rediscovers |
517 | // the paths and arrive at the same module version hash once again. It will churn |
518 | // part of the browser cache once, for clients connecting during that window. |
519 | |
520 | if ( !$hasPendingUpdate ) { |
521 | DeferredUpdates::addCallableUpdate( function () { |
522 | $updatesByEntity = $this->depStoreUpdateBuffer; |
523 | $this->depStoreUpdateBuffer = []; |
524 | $cache = ObjectCache::getLocalClusterInstance(); |
525 | |
526 | $scopeLocks = []; |
527 | $depsByEntity = []; |
528 | $entitiesUnreg = []; |
529 | foreach ( $updatesByEntity as $entity => $update ) { |
530 | $lockKey = $cache->makeKey( 'rl-deps', $entity ); |
531 | $scopeLocks[$entity] = $cache->getScopedLock( $lockKey, 0 ); |
532 | if ( !$scopeLocks[$entity] ) { |
533 | // avoid duplicate write request slams (T124649) |
534 | // the lock must be specific to the current wiki (T247028) |
535 | continue; |
536 | } |
537 | if ( $update === null ) { |
538 | $entitiesUnreg[] = $entity; |
539 | } else { |
540 | $depsByEntity[$entity] = $update; |
541 | } |
542 | } |
543 | |
544 | $ttl = self::RL_MODULE_DEP_TTL; |
545 | $this->depStore->storeMulti( self::RL_DEP_STORE_PREFIX, $depsByEntity, $ttl ); |
546 | $this->depStore->remove( self::RL_DEP_STORE_PREFIX, $entitiesUnreg ); |
547 | } ); |
548 | } |
549 | } |
550 | |
551 | /** |
552 | * Get the list of sources. |
553 | * |
554 | * @return array Like [ id => load.php url, ... ] |
555 | */ |
556 | public function getSources() { |
557 | return $this->sources; |
558 | } |
559 | |
560 | /** |
561 | * Get the URL to the load.php endpoint for the given ResourceLoader source. |
562 | * |
563 | * @since 1.24 |
564 | * @param string $source Source ID |
565 | * @return string |
566 | * @throws UnexpectedValueException If the source ID was not registered |
567 | */ |
568 | public function getLoadScript( $source ) { |
569 | if ( !isset( $this->sources[$source] ) ) { |
570 | throw new UnexpectedValueException( "Unknown source '$source'" ); |
571 | } |
572 | return $this->sources[$source]; |
573 | } |
574 | |
575 | /** |
576 | * @internal For use by StartUpModule only. |
577 | */ |
578 | public const HASH_LENGTH = 5; |
579 | |
580 | /** |
581 | * Create a hash for module versioning purposes. |
582 | * |
583 | * This hash is used in three ways: |
584 | * |
585 | * - To differentiate between the current version and a past version |
586 | * of a module by the same name. |
587 | * |
588 | * In the cache key of localStorage in the browser (mw.loader.store). |
589 | * This store keeps only one version of any given module. As long as the |
590 | * next version the client encounters has a different hash from the last |
591 | * version it saw, it will correctly discard it in favour of a network fetch. |
592 | * |
593 | * A browser may evict a site's storage container for any reason (e.g. when |
594 | * the user hasn't visited a site for some time, and/or when the device is |
595 | * low on storage space). Anecdotally it seems devices rarely keep unused |
596 | * storage beyond 2 weeks on mobile devices and 4 weeks on desktop. |
597 | * But, there is no hard limit or expiration on localStorage. |
598 | * ResourceLoader's Client also clears localStorage when the user changes |
599 | * their language preference or when they (temporarily) use Debug Mode. |
600 | * |
601 | * The only hard factors that reduce the range of possible versions are |
602 | * 1) the name and existence of a given module, and |
603 | * 2) the TTL for mw.loader.store, and |
604 | * 3) the `$wgResourceLoaderStorageVersion` configuration variable. |
605 | * |
606 | * - To identify a batch response of modules from load.php in an HTTP cache. |
607 | * |
608 | * When fetching modules in a batch from load.php, a combined hash |
609 | * is created by the JS code, and appended as query parameter. |
610 | * |
611 | * In cache proxies (e.g. Varnish, Nginx) and in the browser's HTTP cache, |
612 | * these urls are used to identify other previously cached responses. |
613 | * The range of possible versions a given version has to be unique amongst |
614 | * is determined by the maximum duration each response is stored for, which |
615 | * is controlled by `$wgResourceLoaderMaxage['versioned']`. |
616 | * |
617 | * - To detect race conditions between multiple web servers in a MediaWiki |
618 | * deployment of which some have the newer version and some still the older |
619 | * version. |
620 | * |
621 | * An HTTP request from a browser for the Startup manifest may be responded |
622 | * to by a server with the newer version. The browser may then use that to |
623 | * request a given module, which may then be responded to by a server with |
624 | * the older version. To avoid caching this for too long (which would pollute |
625 | * all other users without repairing itself), the combined hash that the JS |
626 | * client adds to the url is verified by the server (in ::sendResponseHeaders). |
627 | * If they don't match, we instruct cache proxies and clients to not cache |
628 | * this response as long as they normally would. This is also the reason |
629 | * that the algorithm used here in PHP must match the one used in JS. |
630 | * |
631 | * The fnv132 digest creates a 32-bit integer, which goes upto 4 Giga and |
632 | * needs up to 7 chars in base 36. |
633 | * Within 7 characters, base 36 can count up to 78,364,164,096 (78 Giga), |
634 | * (but with fnv132 we'd use very little of this range, mostly padding). |
635 | * Within 6 characters, base 36 can count up to 2,176,782,336 (2 Giga). |
636 | * Within 5 characters, base 36 can count up to 60,466,176 (60 Mega). |
637 | * |
638 | * @since 1.26 |
639 | * @param string $value |
640 | * @return string Hash |
641 | */ |
642 | public static function makeHash( $value ) { |
643 | $hash = hash( 'fnv132', $value ); |
644 | // The base_convert will pad it (if too short), |
645 | // then substr() will trim it (if too long). |
646 | return substr( |
647 | \Wikimedia\base_convert( $hash, 16, 36, self::HASH_LENGTH ), |
648 | 0, |
649 | self::HASH_LENGTH |
650 | ); |
651 | } |
652 | |
653 | /** |
654 | * Add an error to the 'errors' array and log it. |
655 | * |
656 | * @internal For use by StartUpModule. |
657 | * @since 1.29 |
658 | * @param Exception $e |
659 | * @param string $msg |
660 | * @param array $context |
661 | */ |
662 | public function outputErrorAndLog( Exception $e, $msg, array $context = [] ) { |
663 | MWExceptionHandler::logException( $e ); |
664 | $this->logger->warning( |
665 | $msg, |
666 | $context + [ 'exception' => $e ] |
667 | ); |
668 | $this->errors[] = self::formatExceptionNoComment( $e ); |
669 | } |
670 | |
671 | /** |
672 | * Helper method to get and combine versions of multiple modules. |
673 | * |
674 | * @since 1.26 |
675 | * @param Context $context |
676 | * @param string[] $moduleNames List of known module names |
677 | * @return string Hash |
678 | */ |
679 | public function getCombinedVersion( Context $context, array $moduleNames ) { |
680 | if ( !$moduleNames ) { |
681 | return ''; |
682 | } |
683 | $hashes = []; |
684 | foreach ( $moduleNames as $module ) { |
685 | try { |
686 | $hash = $this->getModule( $module )->getVersionHash( $context ); |
687 | } catch ( TimeoutException $e ) { |
688 | throw $e; |
689 | } catch ( Exception $e ) { |
690 | // If modules fail to compute a version, don't fail the request (T152266) |
691 | // and still compute versions of other modules. |
692 | $this->outputErrorAndLog( $e, |
693 | 'Calculating version for "{module}" failed: {exception}', |
694 | [ |
695 | 'module' => $module, |
696 | ] |
697 | ); |
698 | $hash = ''; |
699 | } |
700 | $hashes[] = $hash; |
701 | } |
702 | return self::makeHash( implode( '', $hashes ) ); |
703 | } |
704 | |
705 | /** |
706 | * Get the expected value of the 'version' query parameter. |
707 | * |
708 | * This is used by respond() to set a short Cache-Control header for requests with |
709 | * information newer than the current server has. This avoids pollution of edge caches. |
710 | * Typically during deployment. (T117587) |
711 | * |
712 | * This MUST match return value of `mw.loader#getCombinedVersion()` client-side. |
713 | * |
714 | * @since 1.28 |
715 | * @param Context $context |
716 | * @param string[] $modules |
717 | * @return string Hash |
718 | */ |
719 | public function makeVersionQuery( Context $context, array $modules ) { |
720 | // As of MediaWiki 1.28, the server and client use the same algorithm for combining |
721 | // version hashes. There is no technical reason for this to be same, and for years the |
722 | // implementations differed. If getCombinedVersion in PHP (used for StartupModule and |
723 | // E-Tag headers) differs in the future from getCombinedVersion in JS (used for 'version' |
724 | // query parameter), then this method must continue to match the JS one. |
725 | $filtered = []; |
726 | foreach ( $modules as $name ) { |
727 | if ( !$this->getModule( $name ) ) { |
728 | // If a versioned request contains a missing module, the version is a mismatch |
729 | // as the client considered a module (and version) we don't have. |
730 | return ''; |
731 | } |
732 | $filtered[] = $name; |
733 | } |
734 | return $this->getCombinedVersion( $context, $filtered ); |
735 | } |
736 | |
737 | /** |
738 | * Output a response to a load request, including the content-type header. |
739 | * |
740 | * @param Context $context Context in which a response should be formed |
741 | */ |
742 | public function respond( Context $context ) { |
743 | // Buffer output to catch warnings. Normally we'd use ob_clean() on the |
744 | // top-level output buffer to clear warnings, but that breaks when ob_gzhandler |
745 | // is used: ob_clean() will clear the GZIP header in that case and it won't come |
746 | // back for subsequent output, resulting in invalid GZIP. So we have to wrap |
747 | // the whole thing in our own output buffer to be sure the active buffer |
748 | // doesn't use ob_gzhandler. |
749 | // See https://bugs.php.net/bug.php?id=36514 |
750 | ob_start(); |
751 | |
752 | $this->errors = []; |
753 | $responseTime = $this->measureResponseTime(); |
754 | ProfilingContext::singleton()->init( MW_ENTRY_POINT, 'respond' ); |
755 | |
756 | // Find out which modules are missing and instantiate the others |
757 | $modules = []; |
758 | $missing = []; |
759 | foreach ( $context->getModules() as $name ) { |
760 | $module = $this->getModule( $name ); |
761 | if ( $module ) { |
762 | // Do not allow private modules to be loaded from the web. |
763 | // This is a security issue, see T36907. |
764 | if ( $module->getGroup() === Module::GROUP_PRIVATE ) { |
765 | // Not a serious error, just means something is trying to access it (T101806) |
766 | $this->logger->debug( "Request for private module '$name' denied" ); |
767 | $this->errors[] = "Cannot build private module \"$name\""; |
768 | continue; |
769 | } |
770 | $modules[$name] = $module; |
771 | } else { |
772 | $missing[] = $name; |
773 | } |
774 | } |
775 | |
776 | try { |
777 | // Preload for getCombinedVersion() and for batch makeModuleResponse() |
778 | $this->preloadModuleInfo( array_keys( $modules ), $context ); |
779 | } catch ( TimeoutException $e ) { |
780 | throw $e; |
781 | } catch ( Exception $e ) { |
782 | $this->outputErrorAndLog( $e, 'Preloading module info failed: {exception}' ); |
783 | } |
784 | |
785 | // Combine versions to propagate cache invalidation |
786 | $versionHash = $this->getCombinedVersion( $context, array_keys( $modules ) ); |
787 | |
788 | // See RFC 2616 § 3.11 Entity Tags |
789 | // https://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.11 |
790 | $etag = 'W/"' . $versionHash . '"'; |
791 | |
792 | // Try the client-side cache first |
793 | if ( $this->tryRespondNotModified( $context, $etag ) ) { |
794 | return; // output handled (buffers cleared) |
795 | } |
796 | |
797 | if ( $context->isSourceMap() ) { |
798 | // In source map mode, a version mismatch should be a 404 |
799 | if ( $context->getVersion() !== null && $versionHash !== $context->getVersion() ) { |
800 | ob_end_clean(); |
801 | $this->sendSourceMapVersionMismatch( $versionHash ); |
802 | return; |
803 | } |
804 | // No source maps for images, only=styles requests, or debug mode |
805 | if ( $context->getImage() |
806 | || $context->getOnly() === 'styles' |
807 | || $context->getDebug() |
808 | ) { |
809 | ob_end_clean(); |
810 | $this->sendSourceMapTypeNotImplemented(); |
811 | return; |
812 | } |
813 | } |
814 | // Emit source map header if supported (inverse of the above check) |
815 | if ( $this->config->get( MainConfigNames::ResourceLoaderEnableSourceMapLinks ) |
816 | && !$context->getImageObj() |
817 | && !$context->isSourceMap() |
818 | && $context->shouldIncludeScripts() |
819 | && !$context->getDebug() |
820 | ) { |
821 | $this->extraHeaders[] = 'SourceMap: ' . $this->getSourceMapUrl( $context, $versionHash ); |
822 | } |
823 | |
824 | // Generate a response |
825 | $response = $this->makeModuleResponse( $context, $modules, $missing ); |
826 | |
827 | // Capture any PHP warnings from the output buffer and append them to the |
828 | // error list if we're in debug mode. |
829 | if ( $context->getDebug() ) { |
830 | $warnings = ob_get_contents(); |
831 | if ( strlen( $warnings ) ) { |
832 | $this->errors[] = $warnings; |
833 | } |
834 | } |
835 | |
836 | $this->sendResponseHeaders( $context, $etag, (bool)$this->errors, $this->extraHeaders ); |
837 | |
838 | // Remove the output buffer and output the response |
839 | ob_end_clean(); |
840 | |
841 | if ( $context->getImageObj() && $this->errors ) { |
842 | // We can't show both the error messages and the response when it's an image. |
843 | $response = implode( "\n\n", $this->errors ); |
844 | } elseif ( $this->errors ) { |
845 | $errorText = implode( "\n\n", $this->errors ); |
846 | $errorResponse = self::makeComment( $errorText ); |
847 | if ( $context->shouldIncludeScripts() ) { |
848 | $errorResponse .= 'if (window.console && console.error) { console.error(' |
849 | . $context->encodeJson( $errorText ) |
850 | . "); }\n"; |
851 | // Append the error info to the response |
852 | // We used to prepend it, but that would corrupt the source map |
853 | $response .= $errorResponse; |
854 | } else { |
855 | // For styles we can still prepend |
856 | $response = $errorResponse . $response; |
857 | } |
858 | } |
859 | |
860 | echo $response; |
861 | } |
862 | |
863 | /** |
864 | * Send stats about the time used to build the response |
865 | * @return ScopedCallback |
866 | */ |
867 | protected function measureResponseTime() { |
868 | $statStart = $_SERVER['REQUEST_TIME_FLOAT']; |
869 | return new ScopedCallback( function () use ( $statStart ) { |
870 | $statTiming = microtime( true ) - $statStart; |
871 | |
872 | $this->statsFactory->getTiming( 'resourceloader_response_time_seconds' ) |
873 | ->copyToStatsdAt( 'resourceloader.responseTime' ) |
874 | ->observe( 1000 * $statTiming ); |
875 | } ); |
876 | } |
877 | |
878 | /** |
879 | * Send main response headers to the client. |
880 | * |
881 | * Deals with Content-Type, CORS (for stylesheets), and caching. |
882 | * |
883 | * @param Context $context |
884 | * @param string $etag ETag header value |
885 | * @param bool $errors Whether there are errors in the response |
886 | * @param string[] $extra Array of extra HTTP response headers |
887 | */ |
888 | protected function sendResponseHeaders( |
889 | Context $context, $etag, $errors, array $extra = [] |
890 | ): void { |
891 | HeaderCallback::warnIfHeadersSent(); |
892 | |
893 | if ( $errors ) { |
894 | $maxage = self::MAXAGE_RECOVER; |
895 | } elseif ( |
896 | $context->getVersion() !== null |
897 | && $context->getVersion() !== $this->makeVersionQuery( $context, $context->getModules() ) |
898 | ) { |
899 | // If we need to self-correct, set a very short cache expiry |
900 | // to basically just debounce CDN traffic. This applies to: |
901 | // - Internal errors, e.g. due to misconfiguration. |
902 | // - Version mismatch, e.g. due to deployment race (T117587, T47877). |
903 | $this->logger->debug( 'Client and server registry version out of sync' ); |
904 | $maxage = self::MAXAGE_RECOVER; |
905 | } elseif ( $context->getVersion() === null ) { |
906 | // Resources that can't set a version, should have their updates propagate to |
907 | // clients quickly. This applies to shared resources linked from HTML, such as |
908 | // the startup module and stylesheets. |
909 | $maxage = $this->maxageUnversioned; |
910 | } else { |
911 | // When a version is set, use a long expiry because changes |
912 | // will naturally miss the cache by using a different URL. |
913 | $maxage = $this->maxageVersioned; |
914 | } |
915 | if ( $context->getImageObj() ) { |
916 | // Output different headers if we're outputting textual errors. |
917 | if ( $errors ) { |
918 | header( 'Content-Type: text/plain; charset=utf-8' ); |
919 | } else { |
920 | $context->getImageObj()->sendResponseHeaders( $context ); |
921 | } |
922 | } elseif ( $context->isSourceMap() ) { |
923 | header( 'Content-Type: application/json' ); |
924 | } elseif ( $context->getOnly() === 'styles' ) { |
925 | header( 'Content-Type: text/css; charset=utf-8' ); |
926 | header( 'Access-Control-Allow-Origin: *' ); |
927 | } else { |
928 | header( 'Content-Type: text/javascript; charset=utf-8' ); |
929 | } |
930 | // See RFC 2616 § 14.19 ETag |
931 | // https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.19 |
932 | header( 'ETag: ' . $etag ); |
933 | if ( $context->getDebug() ) { |
934 | // Do not cache debug responses |
935 | header( 'Cache-Control: private, no-cache, must-revalidate' ); |
936 | } else { |
937 | // T132418: When a resource expires mid-way a browsing session, prefer to renew it in |
938 | // the background instead of blocking the next page load (eg. startup module, or CSS). |
939 | $staleDirective = ( $maxage > self::MAXAGE_RECOVER |
940 | ? ", stale-while-revalidate=" . min( 60, intval( $maxage / 2 ) ) |
941 | : '' |
942 | ); |
943 | header( "Cache-Control: public, max-age=$maxage, s-maxage=$maxage" . $staleDirective ); |
944 | header( 'Expires: ' . ConvertibleTimestamp::convert( TS_RFC2822, time() + $maxage ) ); |
945 | } |
946 | foreach ( $extra as $header ) { |
947 | header( $header ); |
948 | } |
949 | } |
950 | |
951 | /** |
952 | * Respond with HTTP 304 Not Modified if appropriate. |
953 | * |
954 | * If there's an If-None-Match header, respond with a 304 appropriately |
955 | * and clear out the output buffer. If the client cache is too old then do nothing. |
956 | * |
957 | * @param Context $context |
958 | * @param string $etag ETag header value |
959 | * @return bool True if HTTP 304 was sent and output handled |
960 | */ |
961 | protected function tryRespondNotModified( Context $context, $etag ) { |
962 | // See RFC 2616 § 14.26 If-None-Match |
963 | // https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.26 |
964 | $clientKeys = $context->getRequest()->getHeader( 'If-None-Match', WebRequest::GETHEADER_LIST ); |
965 | // Never send 304s in debug mode |
966 | if ( $clientKeys !== false && !$context->getDebug() && in_array( $etag, $clientKeys ) ) { |
967 | // There's another bug in ob_gzhandler (see also the comment at |
968 | // the top of this function) that causes it to gzip even empty |
969 | // responses, meaning it's impossible to produce a truly empty |
970 | // response (because the gzip header is always there). This is |
971 | // a problem because 304 responses have to be completely empty |
972 | // per the HTTP spec, and Firefox behaves buggily when they're not. |
973 | // See also https://bugs.php.net/bug.php?id=51579 |
974 | // To work around this, we tear down all output buffering before |
975 | // sending the 304. |
976 | wfResetOutputBuffers( /* $resetGzipEncoding = */ true ); |
977 | |
978 | HttpStatus::header( 304 ); |
979 | |
980 | $this->sendResponseHeaders( $context, $etag, false ); |
981 | return true; |
982 | } |
983 | return false; |
984 | } |
985 | |
986 | /** |
987 | * Get the URL which will deliver the source map for the current response. |
988 | * |
989 | * @param Context $context |
990 | * @param string $version The combined version hash |
991 | * @return string |
992 | */ |
993 | private function getSourceMapUrl( Context $context, $version ) { |
994 | return $this->createLoaderURL( 'local', $context, [ |
995 | 'sourcemap' => '1', |
996 | 'version' => $version |
997 | ] ); |
998 | } |
999 | |
1000 | /** |
1001 | * Send an error page for a source map version mismatch |
1002 | * |
1003 | * @param string $currentVersion |
1004 | */ |
1005 | private function sendSourceMapVersionMismatch( $currentVersion ) { |
1006 | HttpStatus::header( 404 ); |
1007 | header( 'Content-Type: text/plain; charset=utf-8' ); |
1008 | header( 'X-Content-Type-Options: nosniff' ); |
1009 | echo "Can't deliver a source map for the requested version " . |
1010 | "since the version is now '$currentVersion'\n"; |
1011 | } |
1012 | |
1013 | /** |
1014 | * Send an error page when a source map is requested but there is no |
1015 | * support for the specified content type |
1016 | */ |
1017 | private function sendSourceMapTypeNotImplemented() { |
1018 | HttpStatus::header( 404 ); |
1019 | header( 'Content-Type: text/plain; charset=utf-8' ); |
1020 | header( 'X-Content-Type-Options: nosniff' ); |
1021 | echo "Can't make a source map for this content type\n"; |
1022 | } |
1023 | |
1024 | /** |
1025 | * Generate a CSS or JS comment block. |
1026 | * |
1027 | * Only use this for public data, not error message details. |
1028 | * |
1029 | * @param string $text |
1030 | * @return string |
1031 | */ |
1032 | public static function makeComment( $text ) { |
1033 | $encText = str_replace( '*/', '* /', $text ); |
1034 | return "/*\n$encText\n*/\n"; |
1035 | } |
1036 | |
1037 | /** |
1038 | * Handle exception display. |
1039 | * |
1040 | * @since 1.25 |
1041 | * @param Throwable $e Exception to be shown to the user |
1042 | * @return string Sanitized text for a CSS/JS comment that can be returned to the user |
1043 | */ |
1044 | protected static function formatExceptionNoComment( Throwable $e ) { |
1045 | if ( !MWExceptionRenderer::shouldShowExceptionDetails() ) { |
1046 | return MWExceptionHandler::getPublicLogMessage( $e ); |
1047 | } |
1048 | |
1049 | // Like MWExceptionHandler::getLogMessage but without $url and $id. |
1050 | // - Long load.php URL would push the actual error message off-screen into |
1051 | // scroll overflow in browser devtools. |
1052 | // - reqId is redundant with X-Request-Id header, plus usually no need to |
1053 | // correlate the reqId since the backtrace is already included below. |
1054 | $type = get_class( $e ); |
1055 | $message = $e->getMessage(); |
1056 | |
1057 | return "$type: $message" . |
1058 | "\nBacktrace:\n" . |
1059 | MWExceptionHandler::getRedactedTraceAsString( $e ); |
1060 | } |
1061 | |
1062 | /** |
1063 | * Generate code for a response. |
1064 | * |
1065 | * Calling this method also populates the `errors` and `headers` members, |
1066 | * later used by respond(). |
1067 | * |
1068 | * @param Context $context Context in which to generate a response |
1069 | * @param Module[] $modules List of module objects keyed by module name |
1070 | * @param string[] $missing List of requested module names that are unregistered (optional) |
1071 | * @return string Response data |
1072 | */ |
1073 | public function makeModuleResponse( Context $context, |
1074 | array $modules, array $missing = [] |
1075 | ) { |
1076 | if ( $modules === [] && $missing === [] ) { |
1077 | return <<<MESSAGE |
1078 | /* This file is the Web entry point for MediaWiki's ResourceLoader: |
1079 | <https://www.mediawiki.org/wiki/ResourceLoader>. In this request, |
1080 | no modules were requested. Max made me put this here. */ |
1081 | MESSAGE; |
1082 | } |
1083 | |
1084 | $image = $context->getImageObj(); |
1085 | if ( $image ) { |
1086 | $data = $image->getImageData( $context ); |
1087 | if ( $data === false ) { |
1088 | $data = ''; |
1089 | $this->errors[] = 'Image generation failed'; |
1090 | } |
1091 | return $data; |
1092 | } |
1093 | |
1094 | $states = []; |
1095 | foreach ( $missing as $name ) { |
1096 | $states[$name] = 'missing'; |
1097 | } |
1098 | |
1099 | $only = $context->getOnly(); |
1100 | $debug = (bool)$context->getDebug(); |
1101 | if ( $context->isSourceMap() && count( $modules ) > 1 ) { |
1102 | $indexMap = new IndexMap; |
1103 | } else { |
1104 | $indexMap = null; |
1105 | } |
1106 | |
1107 | $out = ''; |
1108 | foreach ( $modules as $name => $module ) { |
1109 | try { |
1110 | [ $response, $offset ] = $this->getOneModuleResponse( $context, $name, $module ); |
1111 | if ( $indexMap ) { |
1112 | $indexMap->addEncodedMap( $response, $offset ); |
1113 | } else { |
1114 | $out .= $response; |
1115 | } |
1116 | } catch ( TimeoutException $e ) { |
1117 | throw $e; |
1118 | } catch ( Exception $e ) { |
1119 | $this->outputErrorAndLog( $e, 'Generating module package failed: {exception}' ); |
1120 | |
1121 | // Respond to client with error-state instead of module implementation |
1122 | $states[$name] = 'error'; |
1123 | unset( $modules[$name] ); |
1124 | } |
1125 | } |
1126 | |
1127 | // Update module states |
1128 | if ( $context->shouldIncludeScripts() && !$context->getRaw() ) { |
1129 | if ( $modules && $only === 'scripts' ) { |
1130 | // Set the state of modules loaded as only scripts to ready as |
1131 | // they don't have an mw.loader.impl wrapper that sets the state |
1132 | foreach ( $modules as $name => $module ) { |
1133 | $states[$name] = 'ready'; |
1134 | } |
1135 | } |
1136 | |
1137 | // Set the state of modules we didn't respond to with mw.loader.impl |
1138 | if ( $states && !$context->isSourceMap() ) { |
1139 | $stateScript = self::makeLoaderStateScript( $context, $states ); |
1140 | if ( !$debug ) { |
1141 | $stateScript = self::filter( 'minify-js', $stateScript ); |
1142 | } |
1143 | // Use a linebreak between module script and state script (T162719) |
1144 | $out = self::ensureNewline( $out ) . $stateScript; |
1145 | } |
1146 | } elseif ( $states ) { |
1147 | $this->errors[] = 'Problematic modules: ' |
1148 | // Silently ignore invalid UTF-8 injected via 'modules' query |
1149 | // Don't issue server-side warnings for client errors. (T331641) |
1150 | // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged |
1151 | . @$context->encodeJson( $states ); |
1152 | } |
1153 | |
1154 | if ( $indexMap ) { |
1155 | return $indexMap->getMap(); |
1156 | } else { |
1157 | return $out; |
1158 | } |
1159 | } |
1160 | |
1161 | /** |
1162 | * Get the response of a single module |
1163 | * |
1164 | * @param Context $context |
1165 | * @param string $name |
1166 | * @param Module $module |
1167 | * @return array{string,IndexMapOffset|null} |
1168 | */ |
1169 | private function getOneModuleResponse( Context $context, $name, Module $module ) { |
1170 | $only = $context->getOnly(); |
1171 | // Important: Do not cache minifications of embedded modules |
1172 | // This is especially for the private 'user.options' module, |
1173 | // which varies on every pageview and would explode the cache (T84960) |
1174 | $shouldCache = !$module->shouldEmbedModule( $context ); |
1175 | if ( $only === 'styles' ) { |
1176 | $minifier = new IdentityMinifierState; |
1177 | $this->addOneModuleResponse( $context, $minifier, $name, $module, $this->extraHeaders ); |
1178 | // NOTE: This is not actually "minified". IdentityMinifierState is a no-op wrapper |
1179 | // to ease code reuse. The filter() call below performs CSS minification. |
1180 | $styles = $minifier->getMinifiedOutput(); |
1181 | if ( $context->getDebug() ) { |
1182 | return [ $styles, null ]; |
1183 | } |
1184 | return [ |
1185 | self::filter( 'minify-css', $styles, |
1186 | [ 'cache' => $shouldCache ] ), |
1187 | null |
1188 | ]; |
1189 | } |
1190 | |
1191 | $minifier = new IdentityMinifierState; |
1192 | $this->addOneModuleResponse( $context, $minifier, $name, $module, $this->extraHeaders ); |
1193 | $plainContent = $minifier->getMinifiedOutput(); |
1194 | if ( $context->getDebug() ) { |
1195 | return [ $plainContent, null ]; |
1196 | } |
1197 | |
1198 | $isHit = true; |
1199 | $callback = function () use ( $context, $name, $module, &$isHit ) { |
1200 | $isHit = false; |
1201 | if ( $context->isSourceMap() ) { |
1202 | $minifier = ( new JavaScriptMapperState ) |
1203 | ->outputFile( $this->createLoaderURL( 'local', $context, [ |
1204 | 'modules' => self::makePackedModulesString( $context->getModules() ), |
1205 | 'only' => $context->getOnly() |
1206 | ] ) ); |
1207 | } else { |
1208 | $minifier = new JavaScriptMinifierState; |
1209 | } |
1210 | // We only need to add one set of headers, and we did that for the identity response |
1211 | $discardedHeaders = null; |
1212 | $this->addOneModuleResponse( $context, $minifier, $name, $module, $discardedHeaders ); |
1213 | if ( $context->isSourceMap() ) { |
1214 | $sourceMap = $minifier->getRawSourceMap(); |
1215 | $generated = $minifier->getMinifiedOutput(); |
1216 | $offset = IndexMapOffset::newFromText( $generated ); |
1217 | return [ $sourceMap, $offset->toArray() ]; |
1218 | } else { |
1219 | return [ $minifier->getMinifiedOutput(), null ]; |
1220 | } |
1221 | }; |
1222 | |
1223 | if ( $shouldCache ) { |
1224 | [ $response, $offsetArray ] = $this->srvCache->getWithSetCallback( |
1225 | $this->srvCache->makeGlobalKey( |
1226 | 'resourceloader-mapped', |
1227 | self::CACHE_VERSION, |
1228 | $name, |
1229 | $context->isSourceMap() ? '1' : '0', |
1230 | md5( $plainContent ) |
1231 | ), |
1232 | BagOStuff::TTL_DAY, |
1233 | $callback |
1234 | ); |
1235 | |
1236 | $mapType = $context->isSourceMap() ? 'map-js' : 'minify-js'; |
1237 | $statsdNamespace = implode( '.', [ |
1238 | "resourceloader_cache", $mapType, $isHit ? 'hit' : 'miss' |
1239 | ] ); |
1240 | $this->statsFactory->getCounter( 'resourceloader_cache_total' ) |
1241 | ->setLabel( 'type', $mapType ) |
1242 | ->setLabel( 'status', $isHit ? 'hit' : 'miss' ) |
1243 | ->copyToStatsdAt( [ $statsdNamespace ] ) |
1244 | ->increment(); |
1245 | } else { |
1246 | [ $response, $offsetArray ] = $callback(); |
1247 | } |
1248 | $offset = $offsetArray ? IndexMapOffset::newFromArray( $offsetArray ) : null; |
1249 | |
1250 | return [ $response, $offset ]; |
1251 | } |
1252 | |
1253 | /** |
1254 | * Add the response of a single module to the MinifierState |
1255 | * |
1256 | * @param Context $context |
1257 | * @param MinifierState $minifier |
1258 | * @param string $name |
1259 | * @param Module $module |
1260 | * @param array|null &$headers Array of headers. If it is not null, the |
1261 | * module's headers will be appended to this array. |
1262 | */ |
1263 | private function addOneModuleResponse( |
1264 | Context $context, MinifierState $minifier, $name, Module $module, &$headers |
1265 | ) { |
1266 | $only = $context->getOnly(); |
1267 | $debug = (bool)$context->getDebug(); |
1268 | $content = $module->getModuleContent( $context ); |
1269 | $version = $module->getVersionHash( $context ); |
1270 | |
1271 | if ( $headers !== null && isset( $content['headers'] ) ) { |
1272 | $headers = array_merge( $headers, $content['headers'] ); |
1273 | } |
1274 | |
1275 | // Append output |
1276 | switch ( $only ) { |
1277 | case 'scripts': |
1278 | $scripts = $content['scripts']; |
1279 | if ( !is_array( $scripts ) ) { |
1280 | // Formerly scripts was usually a string, but now it is |
1281 | // normalized to an array by buildContent(). |
1282 | throw new InvalidArgumentException( 'scripts must be an array' ); |
1283 | } |
1284 | if ( isset( $scripts['plainScripts'] ) ) { |
1285 | // Add plain scripts |
1286 | $this->addPlainScripts( $minifier, $name, $scripts['plainScripts'] ); |
1287 | } elseif ( isset( $scripts['files'] ) ) { |
1288 | // Add implement call if any |
1289 | $this->addImplementScript( |
1290 | $minifier, |
1291 | $name, |
1292 | $version, |
1293 | $scripts, |
1294 | [], |
1295 | null, |
1296 | [], |
1297 | $content['deprecationWarning'] ?? null |
1298 | ); |
1299 | } |
1300 | break; |
1301 | case 'styles': |
1302 | $styles = $content['styles']; |
1303 | // We no longer separate into media, they are all combined now with |
1304 | // custom media type groups into @media .. {} sections as part of the css string. |
1305 | // Module returns either an empty array or a numerical array with css strings. |
1306 | if ( isset( $styles['css'] ) ) { |
1307 | $minifier->addOutput( implode( '', $styles['css'] ) ); |
1308 | } |
1309 | break; |
1310 | default: |
1311 | $scripts = $content['scripts'] ?? ''; |
1312 | if ( ( $name === 'site' || $name === 'user' ) |
1313 | && isset( $scripts['plainScripts'] ) |
1314 | ) { |
1315 | // Legacy scripts that run in the global scope without a closure. |
1316 | // mw.loader.impl will use eval if scripts is a string. |
1317 | // Minify manually here, because general response minification is |
1318 | // not effective due it being a string literal, not a function. |
1319 | $scripts = self::concatenatePlainScripts( $scripts['plainScripts'] ); |
1320 | if ( !$debug ) { |
1321 | $scripts = self::filter( 'minify-js', $scripts ); // T107377 |
1322 | } |
1323 | } |
1324 | $this->addImplementScript( |
1325 | $minifier, |
1326 | $name, |
1327 | $version, |
1328 | $scripts, |
1329 | $content['styles'] ?? [], |
1330 | isset( $content['messagesBlob'] ) ? new HtmlJsCode( $content['messagesBlob'] ) : null, |
1331 | $content['templates'] ?? [], |
1332 | $content['deprecationWarning'] ?? null |
1333 | ); |
1334 | break; |
1335 | } |
1336 | $minifier->ensureNewline(); |
1337 | } |
1338 | |
1339 | /** |
1340 | * Ensure the string is either empty or ends in a line break |
1341 | * @internal |
1342 | * @param string $str |
1343 | * @return string |
1344 | */ |
1345 | public static function ensureNewline( $str ) { |
1346 | $end = substr( $str, -1 ); |
1347 | if ( $end === false || $end === '' || $end === "\n" ) { |
1348 | return $str; |
1349 | } |
1350 | return $str . "\n"; |
1351 | } |
1352 | |
1353 | /** |
1354 | * Get names of modules that use a certain message. |
1355 | * |
1356 | * @param string $messageKey |
1357 | * @return string[] List of module names |
1358 | */ |
1359 | public function getModulesByMessage( $messageKey ) { |
1360 | $moduleNames = []; |
1361 | foreach ( $this->getModuleNames() as $moduleName ) { |
1362 | $module = $this->getModule( $moduleName ); |
1363 | if ( in_array( $messageKey, $module->getMessages() ) ) { |
1364 | $moduleNames[] = $moduleName; |
1365 | } |
1366 | } |
1367 | return $moduleNames; |
1368 | } |
1369 | |
1370 | /** |
1371 | * Generate JS code that calls mw.loader.impl with given module properties |
1372 | * and add it to the MinifierState. |
1373 | * |
1374 | * @param MinifierState $minifier The minifier to which output should be appended |
1375 | * @param string $moduleName The module name |
1376 | * @param string $version The module version hash |
1377 | * @param array|string|string[] $scripts |
1378 | * - array: Package files array containing strings for individual JS files, |
1379 | * as produced by Module::getScript(). |
1380 | * - string: Script contents to eval in global scope (for site/user scripts). |
1381 | * - string[]: List of URLs (for debug mode). |
1382 | * @param array<string,string|array<string,string[]>> $styles |
1383 | * Under optional key "css", there is a concatenated CSS string. |
1384 | * Under optional key "url", there is an array by media type withs URLs to stylesheets (for debug mode). |
1385 | * These come from Module::getStyles(), formatted by Module:buildContent(). |
1386 | * @param HtmlJsCode|null $messages An already JSON-encoded map from message keys to values, |
1387 | * wrapped in an HtmlJsCode object. |
1388 | * @param array<string,string> $templates Map from template name to template source. |
1389 | * @param string|null $deprecationWarning |
1390 | */ |
1391 | private function addImplementScript( MinifierState $minifier, |
1392 | $moduleName, $version, $scripts, $styles, $messages, $templates, $deprecationWarning |
1393 | ) { |
1394 | $implementKey = "$moduleName@$version"; |
1395 | // Plain functions are used instead of arrow functions to avoid |
1396 | // defeating lazy compilation on Chrome. (T343407) |
1397 | $minifier->addOutput( "mw.loader.impl(function(){return[" . |
1398 | Html::encodeJsVar( $implementKey ) . "," ); |
1399 | |
1400 | // Scripts |
1401 | if ( is_string( $scripts ) ) { |
1402 | // user/site script |
1403 | $minifier->addOutput( Html::encodeJsVar( $scripts ) ); |
1404 | } elseif ( is_array( $scripts ) ) { |
1405 | if ( isset( $scripts['files'] ) ) { |
1406 | $minifier->addOutput( |
1407 | "{\"main\":" . |
1408 | Html::encodeJsVar( $scripts['main'] ) . |
1409 | ",\"files\":" ); |
1410 | $this->addFiles( $minifier, $moduleName, $scripts['files'] ); |
1411 | $minifier->addOutput( "}" ); |
1412 | } elseif ( isset( $scripts['plainScripts'] ) ) { |
1413 | if ( $this->isEmptyFileInfos( $scripts['plainScripts'] ) ) { |
1414 | $minifier->addOutput( 'null' ); |
1415 | } else { |
1416 | $minifier->addOutput( "function($,jQuery,require,module){" ); |
1417 | $this->addPlainScripts( $minifier, $moduleName, $scripts['plainScripts'] ); |
1418 | $minifier->addOutput( "}" ); |
1419 | } |
1420 | } elseif ( $scripts === [] || isset( $scripts[0] ) ) { |
1421 | // Array of URLs |
1422 | $minifier->addOutput( Html::encodeJsVar( $scripts ) ); |
1423 | } else { |
1424 | throw new InvalidArgumentException( 'Invalid script array: ' . |
1425 | 'must contain files, plainScripts or be an array of URLs' ); |
1426 | } |
1427 | } else { |
1428 | throw new InvalidArgumentException( 'Script must be a string or array' ); |
1429 | } |
1430 | |
1431 | // mw.loader.impl requires 'styles', 'messages' and 'templates' to be objects (not |
1432 | // arrays). json_encode considers empty arrays to be numerical and outputs "[]" instead |
1433 | // of "{}". Force them to objects. |
1434 | $extraArgs = [ |
1435 | (object)$styles, |
1436 | $messages ?? (object)[], |
1437 | (object)$templates, |
1438 | $deprecationWarning |
1439 | ]; |
1440 | self::trimArray( $extraArgs ); |
1441 | foreach ( $extraArgs as $arg ) { |
1442 | $minifier->addOutput( ',' . Html::encodeJsVar( $arg ) ); |
1443 | } |
1444 | $minifier->addOutput( "];});" ); |
1445 | } |
1446 | |
1447 | /** |
1448 | * Extract the contents of an array of package files, and convert it to a |
1449 | * JavaScript array. Add the array to the minifier state. |
1450 | * |
1451 | * Package files can contain JSON data. |
1452 | * |
1453 | * @param MinifierState $minifier |
1454 | * @param string $moduleName |
1455 | * @param array $files |
1456 | */ |
1457 | private function addFiles( MinifierState $minifier, $moduleName, $files ) { |
1458 | $first = true; |
1459 | $minifier->addOutput( "{" ); |
1460 | foreach ( $files as $fileName => $file ) { |
1461 | if ( $first ) { |
1462 | $first = false; |
1463 | } else { |
1464 | $minifier->addOutput( "," ); |
1465 | } |
1466 | $minifier->addOutput( Html::encodeJsVar( $fileName ) . ':' ); |
1467 | $this->addFileContent( $minifier, $moduleName, 'packageFile', $fileName, $file ); |
1468 | } |
1469 | $minifier->addOutput( "}" ); |
1470 | } |
1471 | |
1472 | /** |
1473 | * Add a package file to a MinifierState |
1474 | * |
1475 | * @param MinifierState $minifier |
1476 | * @param string $moduleName |
1477 | * @param string $sourceType |
1478 | * @param string|int $sourceIndex |
1479 | * @param array $file The expanded file info array |
1480 | */ |
1481 | private function addFileContent( MinifierState $minifier, |
1482 | $moduleName, $sourceType, $sourceIndex, array $file |
1483 | ) { |
1484 | $isScript = ( $file['type'] ?? 'script' ) === 'script'; |
1485 | /** @var FilePath|null $filePath */ |
1486 | $filePath = $file['filePath'] ?? $file['virtualFilePath'] ?? null; |
1487 | if ( $filePath !== null && $filePath->getRemoteBasePath() !== null ) { |
1488 | $url = $filePath->getRemotePath(); |
1489 | } else { |
1490 | $ext = $isScript ? 'js' : 'json'; |
1491 | $scriptPath = $this->config->has( MainConfigNames::ScriptPath ) |
1492 | ? $this->config->get( MainConfigNames::ScriptPath ) : ''; |
1493 | $url = "$scriptPath/virtual-resource/$moduleName-$sourceType-$sourceIndex.$ext"; |
1494 | } |
1495 | $content = $file['content']; |
1496 | if ( $isScript ) { |
1497 | if ( $sourceType === 'packageFile' ) { |
1498 | // Provide CJS `exports` (in addition to CJS2 `module.exports`) to package modules (T284511). |
1499 | // $/jQuery are simply used as globals instead. |
1500 | // TODO: Remove $/jQuery param from traditional module closure too (and bump caching) |
1501 | $minifier->addOutput( "function(require,module,exports){" ); |
1502 | $minifier->addSourceFile( $url, $content, true ); |
1503 | $minifier->ensureNewline(); |
1504 | $minifier->addOutput( "}" ); |
1505 | } else { |
1506 | $minifier->addSourceFile( $url, $content, true ); |
1507 | $minifier->ensureNewline(); |
1508 | } |
1509 | } else { |
1510 | $content = Html::encodeJsVar( $content, true ); |
1511 | $minifier->addSourceFile( $url, $content, true ); |
1512 | } |
1513 | } |
1514 | |
1515 | /** |
1516 | * Combine a plainScripts array like [ [ 'content' => '...' ] ] into a |
1517 | * single string. |
1518 | * |
1519 | * @param array[] $plainScripts |
1520 | * @return string |
1521 | */ |
1522 | private static function concatenatePlainScripts( $plainScripts ) { |
1523 | $s = ''; |
1524 | foreach ( $plainScripts as $script ) { |
1525 | // Make the script safe to concatenate by making sure there is at least one |
1526 | // trailing new line at the end of the content (T29054, T162719) |
1527 | $s .= self::ensureNewline( $script['content'] ); |
1528 | } |
1529 | return $s; |
1530 | } |
1531 | |
1532 | /** |
1533 | * Add contents from a plainScripts array like [ [ 'content' => '...' ] |
1534 | * to a MinifierState |
1535 | * |
1536 | * @param MinifierState $minifier |
1537 | * @param string $moduleName |
1538 | * @param array[] $plainScripts |
1539 | */ |
1540 | private function addPlainScripts( MinifierState $minifier, $moduleName, $plainScripts ) { |
1541 | foreach ( $plainScripts as $index => $file ) { |
1542 | $this->addFileContent( $minifier, $moduleName, 'script', $index, $file ); |
1543 | } |
1544 | } |
1545 | |
1546 | /** |
1547 | * Determine whether an array of file info arrays has empty content |
1548 | * |
1549 | * @param array $infos |
1550 | * @return bool |
1551 | */ |
1552 | private function isEmptyFileInfos( $infos ) { |
1553 | $len = 0; |
1554 | foreach ( $infos as $info ) { |
1555 | $len += strlen( $info['content'] ?? '' ); |
1556 | } |
1557 | return $len === 0; |
1558 | } |
1559 | |
1560 | /** |
1561 | * Combines an associative array mapping media type to CSS into a |
1562 | * single stylesheet with "@media" blocks. |
1563 | * |
1564 | * @param array<string,string|string[]> $stylePairs Map from media type to CSS string(s) |
1565 | * @return string[] CSS strings |
1566 | */ |
1567 | public static function makeCombinedStyles( array $stylePairs ) { |
1568 | $out = []; |
1569 | foreach ( $stylePairs as $media => $styles ) { |
1570 | // FileModule::getStyle can return the styles as a string or an |
1571 | // array of strings. This is to allow separation in the front-end. |
1572 | $styles = (array)$styles; |
1573 | foreach ( $styles as $style ) { |
1574 | $style = trim( $style ); |
1575 | // Don't output an empty "@media print { }" block (T42498) |
1576 | if ( $style === '' ) { |
1577 | continue; |
1578 | } |
1579 | // Transform the media type based on request params and config |
1580 | // The way that this relies on $wgRequest to propagate request params is slightly evil |
1581 | $media = OutputPage::transformCssMedia( $media ); |
1582 | |
1583 | if ( $media === '' || $media == 'all' ) { |
1584 | $out[] = $style; |
1585 | } elseif ( is_string( $media ) ) { |
1586 | $out[] = "@media $media {\n" . str_replace( "\n", "\n\t", "\t" . $style ) . "}"; |
1587 | } |
1588 | // else: skip |
1589 | } |
1590 | } |
1591 | return $out; |
1592 | } |
1593 | |
1594 | /** |
1595 | * Wrapper around json_encode that avoids needless escapes, |
1596 | * and pretty-prints in debug mode. |
1597 | * |
1598 | * @param mixed $data |
1599 | * @return string|false JSON string, false on error |
1600 | */ |
1601 | private static function encodeJsonForScript( $data ) { |
1602 | // Keep output as small as possible by disabling needless escape modes |
1603 | // that PHP uses by default. |
1604 | // However, while most module scripts are only served on HTTP responses |
1605 | // for JavaScript, some modules can also be embedded in the HTML as inline |
1606 | // scripts. This, and the fact that we sometimes need to export strings |
1607 | // containing user-generated content and labels that may genuinely contain |
1608 | // a sequences like "</script>", we need to encode either '/' or '<'. |
1609 | // By default PHP escapes '/'. Let's escape '<' instead which is less common |
1610 | // and allows URLs to mostly remain readable. |
1611 | $jsonFlags = JSON_UNESCAPED_SLASHES | |
1612 | JSON_UNESCAPED_UNICODE | |
1613 | JSON_HEX_TAG | |
1614 | JSON_HEX_AMP; |
1615 | if ( self::inDebugMode() ) { |
1616 | $jsonFlags |= JSON_PRETTY_PRINT; |
1617 | } |
1618 | return json_encode( $data, $jsonFlags ); |
1619 | } |
1620 | |
1621 | /** |
1622 | * Format a JS call to mw.loader.state() |
1623 | * |
1624 | * @internal For use by StartUpModule |
1625 | * @param Context $context |
1626 | * @param array<string,string> $states |
1627 | * @return string JavaScript code |
1628 | */ |
1629 | public static function makeLoaderStateScript( |
1630 | Context $context, array $states |
1631 | ) { |
1632 | return 'mw.loader.state(' |
1633 | // Silently ignore invalid UTF-8 injected via 'modules' query |
1634 | // Don't issue server-side warnings for client errors. (T331641) |
1635 | // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged |
1636 | . @$context->encodeJson( $states ) |
1637 | . ');'; |
1638 | } |
1639 | |
1640 | private static function isEmptyObject( stdClass $obj ) { |
1641 | foreach ( $obj as $value ) { |
1642 | return false; |
1643 | } |
1644 | return true; |
1645 | } |
1646 | |
1647 | /** |
1648 | * Remove empty values from the end of an array. |
1649 | * |
1650 | * Values considered empty: |
1651 | * |
1652 | * - null |
1653 | * - [] |
1654 | * - new HtmlJsCode( '{}' ) |
1655 | * - new stdClass() |
1656 | * - (object)[] |
1657 | * |
1658 | * @param array &$array |
1659 | */ |
1660 | private static function trimArray( array &$array ): void { |
1661 | $i = count( $array ); |
1662 | while ( $i-- ) { |
1663 | if ( $array[$i] === null |
1664 | || $array[$i] === [] |
1665 | || ( $array[$i] instanceof HtmlJsCode && $array[$i]->value === '{}' ) |
1666 | || ( $array[$i] instanceof stdClass && self::isEmptyObject( $array[$i] ) ) |
1667 | ) { |
1668 | unset( $array[$i] ); |
1669 | } else { |
1670 | break; |
1671 | } |
1672 | } |
1673 | } |
1674 | |
1675 | /** |
1676 | * Format JS code which calls `mw.loader.register()` with the given parameters. |
1677 | * |
1678 | * @par Example |
1679 | * @code |
1680 | * |
1681 | * ResourceLoader::makeLoaderRegisterScript( $context, [ |
1682 | * [ $name1, $version1, $dependencies1, $group1, $source1, $skip1 ], |
1683 | * [ $name2, $version2, $dependencies1, $group2, $source2, $skip2 ], |
1684 | * ... |
1685 | * ] ): |
1686 | * @endcode |
1687 | * |
1688 | * @internal For use by StartUpModule only |
1689 | * @param Context $context |
1690 | * @param array[] $modules Array of module registration arrays, each containing |
1691 | * - string: module name |
1692 | * - string: module version |
1693 | * - array|null: List of dependencies (optional) |
1694 | * - string|null: Module group (optional) |
1695 | * - string|null: Name of foreign module source, or 'local' (optional) |
1696 | * - string|null: Script body of a skip function (optional) |
1697 | * @phan-param array<int,array{0:string,1:string,2?:?array,3?:?string,4?:?string,5?:?string}> $modules |
1698 | * @return string JavaScript code |
1699 | */ |
1700 | public static function makeLoaderRegisterScript( |
1701 | Context $context, array $modules |
1702 | ) { |
1703 | // Optimisation: Transform dependency names into indexes when possible |
1704 | // to produce smaller output. They are expanded by mw.loader.register on |
1705 | // the other end. |
1706 | $index = []; |
1707 | foreach ( $modules as $i => $module ) { |
1708 | // Build module name index |
1709 | $index[$module[0]] = $i; |
1710 | } |
1711 | foreach ( $modules as &$module ) { |
1712 | if ( isset( $module[2] ) ) { |
1713 | foreach ( $module[2] as &$dependency ) { |
1714 | if ( isset( $index[$dependency] ) ) { |
1715 | // Replace module name in dependency list with index |
1716 | $dependency = $index[$dependency]; |
1717 | } |
1718 | } |
1719 | } |
1720 | self::trimArray( $module ); |
1721 | } |
1722 | |
1723 | return 'mw.loader.register(' |
1724 | . $context->encodeJson( $modules ) |
1725 | . ');'; |
1726 | } |
1727 | |
1728 | /** |
1729 | * Format JS code which calls `mw.loader.addSource()` with the given parameters. |
1730 | * |
1731 | * - ResourceLoader::makeLoaderSourcesScript( $context, |
1732 | * [ $id1 => $loadUrl, $id2 => $loadUrl, ... ] |
1733 | * ); |
1734 | * Register sources with the given IDs and properties. |
1735 | * |
1736 | * @internal For use by StartUpModule only |
1737 | * @param Context $context |
1738 | * @param array<string,string> $sources |
1739 | * @return string JavaScript code |
1740 | */ |
1741 | public static function makeLoaderSourcesScript( |
1742 | Context $context, array $sources |
1743 | ) { |
1744 | return 'mw.loader.addSource(' |
1745 | . $context->encodeJson( $sources ) |
1746 | . ');'; |
1747 | } |
1748 | |
1749 | /** |
1750 | * Wrap JavaScript code to run after the startup module. |
1751 | * |
1752 | * @param string $script JavaScript code |
1753 | * @return string JavaScript code |
1754 | */ |
1755 | public static function makeLoaderConditionalScript( $script ) { |
1756 | // Adds a function to lazy-created RLQ |
1757 | return '(RLQ=window.RLQ||[]).push(function(){' . |
1758 | trim( $script ) . '});'; |
1759 | } |
1760 | |
1761 | /** |
1762 | * Wrap JavaScript code to run after a required module. |
1763 | * |
1764 | * @since 1.32 |
1765 | * @param string|string[] $modules Module name(s) |
1766 | * @param string $script JavaScript code |
1767 | * @return string JavaScript code |
1768 | */ |
1769 | public static function makeInlineCodeWithModule( $modules, $script ) { |
1770 | // Adds an array to lazy-created RLQ |
1771 | return '(RLQ=window.RLQ||[]).push([' |
1772 | . self::encodeJsonForScript( $modules ) . ',' |
1773 | . 'function(){' . trim( $script ) . '}' |
1774 | . ']);'; |
1775 | } |
1776 | |
1777 | /** |
1778 | * Make an HTML script that runs given JS code after startup and base modules. |
1779 | * |
1780 | * The code will be wrapped in a closure, and it will be executed by ResourceLoader's |
1781 | * startup module if the client has adequate support for MediaWiki JavaScript code. |
1782 | * |
1783 | * @param string $script JavaScript code |
1784 | * @param string|null $nonce Unused |
1785 | * @return string|WrappedString HTML |
1786 | */ |
1787 | public static function makeInlineScript( $script, $nonce = null ) { |
1788 | $js = self::makeLoaderConditionalScript( $script ); |
1789 | return new WrappedString( |
1790 | Html::inlineScript( $js ), |
1791 | "<script>(RLQ=window.RLQ||[]).push(function(){", |
1792 | '});</script>' |
1793 | ); |
1794 | } |
1795 | |
1796 | /** |
1797 | * Return JS code which will set the MediaWiki configuration array to |
1798 | * the given value. |
1799 | * |
1800 | * @param array $configuration List of configuration values keyed by variable name |
1801 | * @return string JavaScript code |
1802 | * @throws LogicException |
1803 | */ |
1804 | public static function makeConfigSetScript( array $configuration ) { |
1805 | $json = self::encodeJsonForScript( $configuration ); |
1806 | if ( $json === false ) { |
1807 | $e = new LogicException( |
1808 | 'JSON serialization of config data failed. ' . |
1809 | 'This usually means the config data is not valid UTF-8.' |
1810 | ); |
1811 | MWExceptionHandler::logException( $e ); |
1812 | return 'mw.log.error(' . self::encodeJsonForScript( $e->__toString() ) . ');'; |
1813 | } |
1814 | return "mw.config.set($json);"; |
1815 | } |
1816 | |
1817 | /** |
1818 | * Convert an array of module names to a packed query string. |
1819 | * |
1820 | * For example, `[ 'foo.bar', 'foo.baz', 'bar.baz', 'bar.quux' ]` |
1821 | * becomes `'foo.bar,baz|bar.baz,quux'`. |
1822 | * |
1823 | * This process is reversed by ResourceLoader::expandModuleNames(). |
1824 | * See also mw.loader#buildModulesString() which is a port of this, used |
1825 | * on the client-side. |
1826 | * |
1827 | * @param string[] $modules List of module names (strings) |
1828 | * @return string Packed query string |
1829 | */ |
1830 | public static function makePackedModulesString( array $modules ) { |
1831 | $moduleMap = []; // [ prefix => [ suffixes ] ] |
1832 | foreach ( $modules as $module ) { |
1833 | $pos = strrpos( $module, '.' ); |
1834 | $prefix = $pos === false ? '' : substr( $module, 0, $pos ); |
1835 | $suffix = $pos === false ? $module : substr( $module, $pos + 1 ); |
1836 | $moduleMap[$prefix][] = $suffix; |
1837 | } |
1838 | |
1839 | $arr = []; |
1840 | foreach ( $moduleMap as $prefix => $suffixes ) { |
1841 | $p = $prefix === '' ? '' : $prefix . '.'; |
1842 | $arr[] = $p . implode( ',', $suffixes ); |
1843 | } |
1844 | return implode( '|', $arr ); |
1845 | } |
1846 | |
1847 | /** |
1848 | * Expand a string of the form `jquery.foo,bar|jquery.ui.baz,quux` to |
1849 | * an array of module names like `[ 'jquery.foo', 'jquery.bar', |
1850 | * 'jquery.ui.baz', 'jquery.ui.quux' ]`. |
1851 | * |
1852 | * This process is reversed by ResourceLoader::makePackedModulesString(). |
1853 | * |
1854 | * @since 1.33 |
1855 | * @param string $modules Packed module name list |
1856 | * @return string[] Array of module names |
1857 | */ |
1858 | public static function expandModuleNames( $modules ) { |
1859 | $retval = []; |
1860 | $exploded = explode( '|', $modules ); |
1861 | foreach ( $exploded as $group ) { |
1862 | if ( strpos( $group, ',' ) === false ) { |
1863 | // This is not a set of modules in foo.bar,baz notation |
1864 | // but a single module |
1865 | $retval[] = $group; |
1866 | continue; |
1867 | } |
1868 | // This is a set of modules in foo.bar,baz notation |
1869 | $pos = strrpos( $group, '.' ); |
1870 | if ( $pos === false ) { |
1871 | // Prefixless modules, i.e. without dots |
1872 | $retval = array_merge( $retval, explode( ',', $group ) ); |
1873 | continue; |
1874 | } |
1875 | // We have a prefix and a bunch of suffixes |
1876 | $prefix = substr( $group, 0, $pos ); // 'foo' |
1877 | $suffixes = explode( ',', substr( $group, $pos + 1 ) ); // [ 'bar', 'baz' ] |
1878 | foreach ( $suffixes as $suffix ) { |
1879 | $retval[] = "$prefix.$suffix"; |
1880 | } |
1881 | } |
1882 | return $retval; |
1883 | } |
1884 | |
1885 | /** |
1886 | * Determine whether debug mode is on. |
1887 | * |
1888 | * Order of priority is: |
1889 | * - 1) Request parameter, |
1890 | * - 2) Cookie, |
1891 | * - 3) Site configuration. |
1892 | * |
1893 | * @return int |
1894 | */ |
1895 | public static function inDebugMode() { |
1896 | if ( self::$debugMode === null ) { |
1897 | global $wgRequest; |
1898 | |
1899 | $resourceLoaderDebug = MediaWikiServices::getInstance()->getMainConfig()->get( |
1900 | MainConfigNames::ResourceLoaderDebug ); |
1901 | $str = $wgRequest->getRawVal( 'debug', |
1902 | $wgRequest->getCookie( 'resourceLoaderDebug', '', $resourceLoaderDebug ? 'true' : '' ) |
1903 | ); |
1904 | self::$debugMode = Context::debugFromString( $str ); |
1905 | } |
1906 | return self::$debugMode; |
1907 | } |
1908 | |
1909 | /** |
1910 | * Reset static members used for caching. |
1911 | * |
1912 | * Global state and $wgRequest are evil, but we're using it right |
1913 | * now and sometimes we need to be able to force ResourceLoader to |
1914 | * re-evaluate the context because it has changed (e.g. in the test suite). |
1915 | * |
1916 | * @internal For use by unit tests |
1917 | * @codeCoverageIgnore |
1918 | */ |
1919 | public static function clearCache() { |
1920 | self::$debugMode = null; |
1921 | } |
1922 | |
1923 | /** |
1924 | * Build a load.php URL |
1925 | * |
1926 | * @since 1.24 |
1927 | * @param string $source Name of the ResourceLoader source |
1928 | * @param Context $context |
1929 | * @param array $extraQuery |
1930 | * @return string URL to load.php. May be protocol-relative if $wgLoadScript is, too. |
1931 | */ |
1932 | public function createLoaderURL( $source, Context $context, |
1933 | array $extraQuery = [] |
1934 | ) { |
1935 | $query = self::createLoaderQuery( $context, $extraQuery ); |
1936 | $script = $this->getLoadScript( $source ); |
1937 | |
1938 | return wfAppendQuery( $script, $query ); |
1939 | } |
1940 | |
1941 | /** |
1942 | * Helper for createLoaderURL() |
1943 | * |
1944 | * @since 1.24 |
1945 | * @see makeLoaderQuery |
1946 | * @param Context $context |
1947 | * @param array $extraQuery |
1948 | * @return array |
1949 | */ |
1950 | protected static function createLoaderQuery( |
1951 | Context $context, array $extraQuery = [] |
1952 | ) { |
1953 | return self::makeLoaderQuery( |
1954 | $context->getModules(), |
1955 | $context->getLanguage(), |
1956 | $context->getSkin(), |
1957 | $context->getUser(), |
1958 | $context->getVersion(), |
1959 | $context->getDebug(), |
1960 | $context->getOnly(), |
1961 | $context->getRequest()->getBool( 'printable' ), |
1962 | null, |
1963 | $extraQuery |
1964 | ); |
1965 | } |
1966 | |
1967 | /** |
1968 | * Build a query array (array representation of query string) for load.php. Helper |
1969 | * function for createLoaderURL(). |
1970 | * |
1971 | * @param string[] $modules |
1972 | * @param string $lang |
1973 | * @param string $skin |
1974 | * @param string|null $user |
1975 | * @param string|null $version |
1976 | * @param int $debug |
1977 | * @param string|null $only |
1978 | * @param bool $printable |
1979 | * @param bool|null $handheld Unused as of MW 1.38 |
1980 | * @param array $extraQuery |
1981 | * @return array |
1982 | */ |
1983 | public static function makeLoaderQuery( array $modules, $lang, $skin, $user = null, |
1984 | $version = null, $debug = Context::DEBUG_OFF, $only = null, |
1985 | $printable = false, $handheld = null, array $extraQuery = [] |
1986 | ) { |
1987 | $query = [ |
1988 | 'modules' => self::makePackedModulesString( $modules ), |
1989 | ]; |
1990 | // Keep urls short by omitting query parameters that |
1991 | // match the defaults assumed by Context. |
1992 | // Note: This relies on the defaults either being insignificant or forever constant, |
1993 | // as otherwise cached urls could change in meaning when the defaults change. |
1994 | if ( $lang !== Context::DEFAULT_LANG ) { |
1995 | $query['lang'] = $lang; |
1996 | } |
1997 | if ( $skin !== Context::DEFAULT_SKIN ) { |
1998 | $query['skin'] = $skin; |
1999 | } |
2000 | if ( $debug !== Context::DEBUG_OFF ) { |
2001 | $query['debug'] = strval( $debug ); |
2002 | } |
2003 | if ( $user !== null ) { |
2004 | $query['user'] = $user; |
2005 | } |
2006 | if ( $version !== null ) { |
2007 | $query['version'] = $version; |
2008 | } |
2009 | if ( $only !== null ) { |
2010 | $query['only'] = $only; |
2011 | } |
2012 | if ( $printable ) { |
2013 | $query['printable'] = 1; |
2014 | } |
2015 | foreach ( $extraQuery as $name => $value ) { |
2016 | $query[$name] = $value; |
2017 | } |
2018 | |
2019 | // Make queries uniform in order |
2020 | ksort( $query ); |
2021 | return $query; |
2022 | } |
2023 | |
2024 | /** |
2025 | * Check a module name for validity. |
2026 | * |
2027 | * Module names may not contain pipes (|), commas (,) or exclamation marks (!) and can be |
2028 | * at most 255 bytes. |
2029 | * |
2030 | * @param string $moduleName Module name to check |
2031 | * @return bool Whether $moduleName is a valid module name |
2032 | */ |
2033 | public static function isValidModuleName( $moduleName ) { |
2034 | $len = strlen( $moduleName ); |
2035 | return $len <= 255 && strcspn( $moduleName, '!,|', 0, $len ) === $len; |
2036 | } |
2037 | |
2038 | /** |
2039 | * Return a LESS compiler that is set up for use with MediaWiki. |
2040 | * |
2041 | * @since 1.27 |
2042 | * @param array $vars Associative array of variables that should be used |
2043 | * for compilation. Since 1.32, this method no longer automatically includes |
2044 | * global LESS vars from ResourceLoader::getLessVars (T191937). |
2045 | * @param array $importDirs Additional directories to look in for @import (since 1.36) |
2046 | * @return Less_Parser |
2047 | */ |
2048 | public function getLessCompiler( array $vars = [], array $importDirs = [] ) { |
2049 | global $IP; |
2050 | // When called from the installer, it is possible that a required PHP extension |
2051 | // is missing (at least for now; see T49564). If this is the case, throw an |
2052 | // exception (caught by the installer) to prevent a fatal error later on. |
2053 | if ( !class_exists( Less_Parser::class ) ) { |
2054 | throw new RuntimeException( 'MediaWiki requires the less.php parser' ); |
2055 | } |
2056 | |
2057 | $importDirs[] = "$IP/resources/src/mediawiki.less"; |
2058 | |
2059 | $parser = new Less_Parser; |
2060 | $parser->ModifyVars( $vars ); |
2061 | $parser->SetOption( 'relativeUrls', false ); |
2062 | |
2063 | // SetImportDirs expects an array like [ 'path1' => '', 'path2' => '' ] |
2064 | $formattedImportDirs = array_fill_keys( $importDirs, '' ); |
2065 | // Add a callback to the import dirs array for path remapping |
2066 | $formattedImportDirs[] = static function ( $path ) { |
2067 | global $IP; |
2068 | $importMap = [ |
2069 | '@wikimedia/codex-icons/' => "$IP/resources/lib/codex-icons/", |
2070 | 'mediawiki.skin.codex-design-tokens/' => "$IP/resources/lib/codex-design-tokens/", |
2071 | '@wikimedia/codex-design-tokens/' => /** @return never */ static function ( $unused_path ) { |
2072 | throw new RuntimeException( |
2073 | 'Importing from @wikimedia/codex-design-tokens is not supported. ' . |
2074 | "To use the Codex tokens, use `@import 'mediawiki.skin.variables.less';` instead." |
2075 | ); |
2076 | } |
2077 | ]; |
2078 | foreach ( $importMap as $importPath => $substPath ) { |
2079 | if ( str_starts_with( $path, $importPath ) ) { |
2080 | $restOfPath = substr( $path, strlen( $importPath ) ); |
2081 | if ( is_callable( $substPath ) ) { |
2082 | $resolvedPath = call_user_func( $substPath, $restOfPath ); |
2083 | } else { |
2084 | $filePath = $substPath . $restOfPath; |
2085 | |
2086 | $resolvedPath = null; |
2087 | if ( file_exists( $filePath ) ) { |
2088 | $resolvedPath = $filePath; |
2089 | } elseif ( file_exists( "$filePath.less" ) ) { |
2090 | $resolvedPath = "$filePath.less"; |
2091 | } |
2092 | } |
2093 | |
2094 | if ( $resolvedPath !== null ) { |
2095 | return [ |
2096 | Less_Environment::normalizePath( $resolvedPath ), |
2097 | Less_Environment::normalizePath( dirname( $path ) ) |
2098 | ]; |
2099 | } else { |
2100 | break; |
2101 | } |
2102 | } |
2103 | } |
2104 | return [ null, null ]; |
2105 | }; |
2106 | $parser->SetImportDirs( $formattedImportDirs ); |
2107 | |
2108 | return $parser; |
2109 | } |
2110 | |
2111 | /** |
2112 | * Resolve a possibly relative URL against a base URL. |
2113 | * |
2114 | * The base URL must have a server and should have a protocol. |
2115 | * A protocol-relative base expands to HTTPS. |
2116 | * |
2117 | * This is a standalone version of MediaWiki's UrlUtils::expand (T32956). |
2118 | * |
2119 | * @internal For use by core ResourceLoader classes only |
2120 | * @param string $base |
2121 | * @param string $url |
2122 | * @return string URL |
2123 | */ |
2124 | public function expandUrl( string $base, string $url ): string { |
2125 | // Net_URL2::resolve() doesn't allow protocol-relative URLs, but we do. |
2126 | $isProtoRelative = strpos( $base, '//' ) === 0; |
2127 | if ( $isProtoRelative ) { |
2128 | $base = "https:$base"; |
2129 | } |
2130 | // Net_URL2::resolve() takes care of throwing if $base doesn't have a server. |
2131 | $baseUrl = new Net_URL2( $base ); |
2132 | $ret = $baseUrl->resolve( $url ); |
2133 | if ( $isProtoRelative ) { |
2134 | $ret->setScheme( false ); |
2135 | } |
2136 | return $ret->getURL(); |
2137 | } |
2138 | |
2139 | /** |
2140 | * Run JavaScript or CSS data through a filter, caching the filtered result for future calls. |
2141 | * |
2142 | * Available filters are: |
2143 | * |
2144 | * - minify-js |
2145 | * - minify-css |
2146 | * |
2147 | * If $data is empty, only contains whitespace or the filter was unknown, |
2148 | * $data is returned unmodified. |
2149 | * |
2150 | * @param string $filter Name of filter to run |
2151 | * @param string $data Text to filter, such as JavaScript or CSS text |
2152 | * @param array<string,bool> $options Keys: |
2153 | * - (bool) cache: Whether to allow caching this data. Default: true. |
2154 | * @return string Filtered data or unfiltered data |
2155 | */ |
2156 | public static function filter( $filter, $data, array $options = [] ) { |
2157 | if ( strpos( $data, self::FILTER_NOMIN ) !== false ) { |
2158 | return $data; |
2159 | } |
2160 | |
2161 | if ( isset( $options['cache'] ) && $options['cache'] === false ) { |
2162 | return self::applyFilter( $filter, $data ) ?? $data; |
2163 | } |
2164 | |
2165 | $statsFactory = MediaWikiServices::getInstance()->getStatsFactory(); |
2166 | $cache = ObjectCache::getLocalServerInstance( CACHE_ANYTHING ); |
2167 | |
2168 | $key = $cache->makeGlobalKey( |
2169 | 'resourceloader-filter', |
2170 | $filter, |
2171 | self::CACHE_VERSION, |
2172 | md5( $data ) |
2173 | ); |
2174 | |
2175 | $status = 'hit'; |
2176 | $incKey = "resourceloader_cache.$filter.$status"; |
2177 | $result = $cache->getWithSetCallback( |
2178 | $key, |
2179 | BagOStuff::TTL_DAY, |
2180 | static function () use ( $filter, $data, &$incKey, &$status ) { |
2181 | $status = 'miss'; |
2182 | $incKey = "resourceloader_cache.$filter.$status"; |
2183 | return self::applyFilter( $filter, $data ); |
2184 | } |
2185 | ); |
2186 | $statsFactory->getCounter( 'resourceloader_cache_total' ) |
2187 | ->setLabel( 'type', $filter ) |
2188 | ->setLabel( 'status', $status ) |
2189 | ->copyToStatsdAt( [ $incKey ] ) |
2190 | ->increment(); |
2191 | |
2192 | // Use $data on cache failure |
2193 | return $result ?? $data; |
2194 | } |
2195 | |
2196 | /** |
2197 | * @param string $filter |
2198 | * @param string $data |
2199 | * @return string|null |
2200 | */ |
2201 | private static function applyFilter( $filter, $data ) { |
2202 | $data = trim( $data ); |
2203 | if ( $data ) { |
2204 | try { |
2205 | $data = ( $filter === 'minify-css' ) |
2206 | ? CSSMin::minify( $data ) |
2207 | : JavaScriptMinifier::minify( $data ); |
2208 | } catch ( TimeoutException $e ) { |
2209 | throw $e; |
2210 | } catch ( Exception $e ) { |
2211 | MWExceptionHandler::logException( $e ); |
2212 | return null; |
2213 | } |
2214 | } |
2215 | return $data; |
2216 | } |
2217 | |
2218 | /** |
2219 | * Get user default options to expose to JavaScript on all pages via `mw.user.options`. |
2220 | * |
2221 | * @internal Exposed for use from Resources.php |
2222 | * |
2223 | * @param Context $context |
2224 | * @param HookContainer $hookContainer |
2225 | * @param UserOptionsLookup $userOptionsLookup |
2226 | * |
2227 | * @return array |
2228 | */ |
2229 | public static function getUserDefaults( |
2230 | Context $context, |
2231 | HookContainer $hookContainer, |
2232 | UserOptionsLookup $userOptionsLookup |
2233 | ): array { |
2234 | $defaultOptions = $userOptionsLookup->getDefaultOptions(); |
2235 | $keysToExclude = []; |
2236 | $hookRunner = new HookRunner( $hookContainer ); |
2237 | $hookRunner->onResourceLoaderExcludeUserOptions( $keysToExclude, $context ); |
2238 | foreach ( $keysToExclude as $excludedKey ) { |
2239 | unset( $defaultOptions[ $excludedKey ] ); |
2240 | } |
2241 | return $defaultOptions; |
2242 | } |
2243 | |
2244 | /** |
2245 | * Get site configuration settings to expose to JavaScript on all pages via `mw.config`. |
2246 | * |
2247 | * @internal Exposed for use from Resources.php |
2248 | * @param Context $context |
2249 | * @param Config $conf |
2250 | * @return array |
2251 | */ |
2252 | public static function getSiteConfigSettings( |
2253 | Context $context, Config $conf |
2254 | ): array { |
2255 | $services = MediaWikiServices::getInstance(); |
2256 | // Namespace related preparation |
2257 | // - wgNamespaceIds: Key-value pairs of all localized, canonical and aliases for namespaces. |
2258 | // - wgCaseSensitiveNamespaces: Array of namespaces that are case-sensitive. |
2259 | $contLang = $services->getContentLanguage(); |
2260 | $namespaceIds = $contLang->getNamespaceIds(); |
2261 | $caseSensitiveNamespaces = []; |
2262 | $nsInfo = $services->getNamespaceInfo(); |
2263 | foreach ( $nsInfo->getCanonicalNamespaces() as $index => $name ) { |
2264 | $namespaceIds[$contLang->lc( $name )] = $index; |
2265 | if ( !$nsInfo->isCapitalized( $index ) ) { |
2266 | $caseSensitiveNamespaces[] = $index; |
2267 | } |
2268 | } |
2269 | |
2270 | $illegalFileChars = $conf->get( MainConfigNames::IllegalFileChars ); |
2271 | |
2272 | // Build list of variables |
2273 | $skin = $context->getSkin(); |
2274 | |
2275 | // Start of supported and stable config vars (for use by extensions/gadgets). |
2276 | $vars = [ |
2277 | 'debug' => $context->getDebug(), |
2278 | 'skin' => $skin, |
2279 | 'stylepath' => $conf->get( MainConfigNames::StylePath ), |
2280 | 'wgArticlePath' => $conf->get( MainConfigNames::ArticlePath ), |
2281 | 'wgScriptPath' => $conf->get( MainConfigNames::ScriptPath ), |
2282 | 'wgScript' => $conf->get( MainConfigNames::Script ), |
2283 | 'wgSearchType' => $conf->get( MainConfigNames::SearchType ), |
2284 | 'wgVariantArticlePath' => $conf->get( MainConfigNames::VariantArticlePath ), |
2285 | 'wgServer' => $conf->get( MainConfigNames::Server ), |
2286 | 'wgServerName' => $conf->get( MainConfigNames::ServerName ), |
2287 | 'wgUserLanguage' => $context->getLanguage(), |
2288 | 'wgContentLanguage' => $contLang->getCode(), |
2289 | 'wgVersion' => MW_VERSION, |
2290 | 'wgFormattedNamespaces' => $contLang->getFormattedNamespaces(), |
2291 | 'wgNamespaceIds' => $namespaceIds, |
2292 | 'wgContentNamespaces' => $nsInfo->getContentNamespaces(), |
2293 | 'wgSiteName' => $conf->get( MainConfigNames::Sitename ), |
2294 | 'wgDBname' => $conf->get( MainConfigNames::DBname ), |
2295 | 'wgWikiID' => WikiMap::getCurrentWikiId(), |
2296 | 'wgCaseSensitiveNamespaces' => $caseSensitiveNamespaces, |
2297 | 'wgCommentCodePointLimit' => CommentStore::COMMENT_CHARACTER_LIMIT, |
2298 | 'wgExtensionAssetsPath' => $conf->get( MainConfigNames::ExtensionAssetsPath ), |
2299 | ]; |
2300 | // End of stable config vars. |
2301 | |
2302 | // Internal variables for use by MediaWiki core and/or ResourceLoader. |
2303 | $vars += [ |
2304 | // @internal For mediawiki.widgets |
2305 | 'wgUrlProtocols' => wfUrlProtocols(), |
2306 | // @internal For mediawiki.page.watch |
2307 | // Force object to avoid "empty" associative array from |
2308 | // becoming [] instead of {} in JS (T36604) |
2309 | 'wgActionPaths' => (object)$conf->get( MainConfigNames::ActionPaths ), |
2310 | // @internal For mediawiki.language |
2311 | 'wgTranslateNumerals' => $conf->get( MainConfigNames::TranslateNumerals ), |
2312 | // @internal For mediawiki.Title |
2313 | 'wgExtraSignatureNamespaces' => $conf->get( MainConfigNames::ExtraSignatureNamespaces ), |
2314 | 'wgLegalTitleChars' => Title::convertByteClassToUnicodeClass( Title::legalChars() ), |
2315 | 'wgIllegalFileChars' => Title::convertByteClassToUnicodeClass( $illegalFileChars ), |
2316 | ]; |
2317 | |
2318 | ( new HookRunner( $services->getHookContainer() ) ) |
2319 | ->onResourceLoaderGetConfigVars( $vars, $skin, $conf ); |
2320 | |
2321 | return $vars; |
2322 | } |
2323 | |
2324 | /** |
2325 | * @internal For testing |
2326 | * @return array |
2327 | */ |
2328 | public function getErrors() { |
2329 | return $this->errors; |
2330 | } |
2331 | } |