Code Coverage |
||||||||||
Lines |
Functions and Methods |
Classes and Traits |
||||||||
| Total | |
59.81% |
189 / 316 |
|
33.33% |
5 / 15 |
CRAP | |
0.00% |
0 / 1 |
| ActionEntryPoint | |
59.81% |
189 / 316 |
|
33.33% |
5 / 15 |
1209.26 | |
0.00% |
0 / 1 |
| getContext | |
100.00% |
2 / 2 |
|
100.00% |
1 / 1 |
1 | |||
| getOutput | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
1 | |||
| getUser | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
1 | |||
| handleTopLevelError | |
0.00% |
0 / 13 |
|
0.00% |
0 / 1 |
56 | |||
| execute | |
59.38% |
19 / 32 |
|
0.00% |
0 / 1 |
12.29 | |||
| maybeDoHttpsRedirect | |
13.33% |
2 / 15 |
|
0.00% |
0 / 1 |
8.86 | |||
| doPrepareForOutput | |
100.00% |
2 / 2 |
|
100.00% |
1 / 1 |
1 | |||
| schedulePostSendJobs | |
66.67% |
2 / 3 |
|
0.00% |
0 / 1 |
2.15 | |||
| parseTitle | |
95.65% |
44 / 46 |
|
0.00% |
0 / 1 |
29 | |||
| getTitle | |
66.67% |
4 / 6 |
|
0.00% |
0 / 1 |
3.33 | |||
| getAction | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
1 | |||
| performRequest | |
59.04% |
49 / 83 |
|
0.00% |
0 / 1 |
77.11 | |||
| tryNormaliseRedirect | |
46.15% |
18 / 39 |
|
0.00% |
0 / 1 |
39.38 | |||
| initializeArticle | |
56.76% |
21 / 37 |
|
0.00% |
0 / 1 |
61.14 | |||
| performAction | |
65.71% |
23 / 35 |
|
0.00% |
0 / 1 |
14.03 | |||
| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Actions; |
| 4 | |
| 5 | use Action; |
| 6 | use Article; |
| 7 | use BadTitleError; |
| 8 | use ErrorPageError; |
| 9 | use HTMLFileCache; |
| 10 | use HttpError; |
| 11 | use MediaWiki\Context\RequestContext; |
| 12 | use MediaWiki\Logger\LoggerFactory; |
| 13 | use MediaWiki\MainConfigNames; |
| 14 | use MediaWiki\MediaWikiEntryPoint; |
| 15 | use MediaWiki\Output\OutputPage; |
| 16 | use MediaWiki\Permissions\PermissionStatus; |
| 17 | use MediaWiki\Profiler\ProfilingContext; |
| 18 | use MediaWiki\Request\DerivativeRequest; |
| 19 | use MediaWiki\Request\WebRequest; |
| 20 | use MediaWiki\SpecialPage\RedirectSpecialPage; |
| 21 | use MediaWiki\SpecialPage\SpecialPage; |
| 22 | use MediaWiki\Title\MalformedTitleException; |
| 23 | use MediaWiki\Title\Title; |
| 24 | use MediaWiki\User\User; |
| 25 | use MWExceptionRenderer; |
| 26 | use PermissionsError; |
| 27 | use Profiler; |
| 28 | use Throwable; |
| 29 | use UnexpectedValueException; |
| 30 | use ViewAction; |
| 31 | use WikiFilePage; |
| 32 | use Wikimedia\Rdbms\DBConnectionError; |
| 33 | |
| 34 | /** |
| 35 | * The index.php entry point for web browser navigations, usually routed to |
| 36 | * an Action or SpecialPage subclass. |
| 37 | * |
| 38 | * @internal For use in index.php |
| 39 | * @ingroup entrypoint |
| 40 | */ |
| 41 | class ActionEntryPoint extends MediaWikiEntryPoint { |
| 42 | |
| 43 | /** |
| 44 | * Overwritten to narrow the return type to RequestContext |
| 45 | * @return RequestContext |
| 46 | */ |
| 47 | protected function getContext(): RequestContext { |
| 48 | /** @var RequestContext $context */ |
| 49 | $context = parent::getContext(); |
| 50 | |
| 51 | // @phan-suppress-next-line PhanTypeMismatchReturnSuperType see $context in the constructor |
| 52 | return $context; |
| 53 | } |
| 54 | |
| 55 | protected function getOutput(): OutputPage { |
| 56 | return $this->getContext()->getOutput(); |
| 57 | } |
| 58 | |
| 59 | protected function getUser(): User { |
| 60 | return $this->getContext()->getUser(); |
| 61 | } |
| 62 | |
| 63 | protected function handleTopLevelError( Throwable $e ) { |
| 64 | $context = $this->getContext(); |
| 65 | $action = $context->getRequest()->getRawVal( 'action', 'view' ); |
| 66 | if ( |
| 67 | $e instanceof DBConnectionError && |
| 68 | $context->hasTitle() && |
| 69 | $context->getTitle()->canExist() && |
| 70 | in_array( $action, [ 'view', 'history' ], true ) && |
| 71 | HTMLFileCache::useFileCache( $context, HTMLFileCache::MODE_OUTAGE ) |
| 72 | ) { |
| 73 | // Try to use any (even stale) file during outages... |
| 74 | $cache = new HTMLFileCache( $context->getTitle(), $action ); |
| 75 | if ( $cache->isCached() ) { |
| 76 | $cache->loadFromFileCache( $context, HTMLFileCache::MODE_OUTAGE ); |
| 77 | $this->print( MWExceptionRenderer::getHTML( $e ) ); |
| 78 | $this->exit(); |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | parent::handleTopLevelError( $e ); |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * Determine and send the response headers and body for this web request |
| 87 | */ |
| 88 | protected function execute() { |
| 89 | global $wgTitle; |
| 90 | |
| 91 | // Get title from request parameters, |
| 92 | // is set on the fly by parseTitle the first time. |
| 93 | $title = $this->getTitle(); |
| 94 | $wgTitle = $title; |
| 95 | |
| 96 | $request = $this->getContext()->getRequest(); |
| 97 | // Set DB query expectations for this HTTP request |
| 98 | $trxLimits = $this->getConfig( MainConfigNames::TrxProfilerLimits ); |
| 99 | $trxProfiler = Profiler::instance()->getTransactionProfiler(); |
| 100 | $trxProfiler->setLogger( LoggerFactory::getInstance( 'rdbms' ) ); |
| 101 | $trxProfiler->setStatsdDataFactory( $this->getStatsdDataFactory() ); |
| 102 | $trxProfiler->setRequestMethod( $request->getMethod() ); |
| 103 | if ( $request->hasSafeMethod() ) { |
| 104 | $trxProfiler->setExpectations( $trxLimits['GET'], __METHOD__ ); |
| 105 | } else { |
| 106 | $trxProfiler->setExpectations( $trxLimits['POST'], __METHOD__ ); |
| 107 | } |
| 108 | |
| 109 | if ( $this->maybeDoHttpsRedirect() ) { |
| 110 | return; |
| 111 | } |
| 112 | |
| 113 | $context = $this->getContext(); |
| 114 | $output = $context->getOutput(); |
| 115 | |
| 116 | // NOTE: HTMLFileCache::useFileCache() is not used in WMF production but is |
| 117 | // here to provide third-party wikis with a way to enable caching for |
| 118 | // "view" and "history" actions. It's triggered by the use of $wgUseFileCache |
| 119 | // when set to true in LocalSettings.php. |
| 120 | if ( $title->canExist() && HTMLFileCache::useFileCache( $context ) ) { |
| 121 | // getAction() may trigger DB queries, so avoid eagerly initializing it if possible. |
| 122 | // This reduces the cost of requests that exit early due to tryNormaliseRedirect() |
| 123 | // or a MediaWikiPerformAction / BeforeInitialize hook handler. |
| 124 | $action = $this->getAction(); |
| 125 | // Try low-level file cache hit |
| 126 | $cache = new HTMLFileCache( $title, $action ); |
| 127 | if ( $cache->isCacheGood( /* Assume up to date */ ) ) { |
| 128 | // Check incoming headers to see if client has this cached |
| 129 | $timestamp = $cache->cacheTimestamp(); |
| 130 | if ( !$output->checkLastModified( $timestamp ) ) { |
| 131 | $cache->loadFromFileCache( $context ); |
| 132 | } |
| 133 | // Do any stats increment/watchlist stuff, assuming user is viewing the |
| 134 | // latest revision (which should always be the case for file cache) |
| 135 | $context->getWikiPage()->doViewUpdates( $context->getAuthority() ); |
| 136 | // Tell OutputPage that output is taken care of |
| 137 | $output->disable(); |
| 138 | |
| 139 | return; |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | try { |
| 144 | // Actually do the work of the request and build up any output |
| 145 | $this->performRequest(); |
| 146 | } catch ( ErrorPageError $e ) { |
| 147 | // TODO: Should ErrorPageError::report accept a OutputPage parameter? |
| 148 | $e->report( ErrorPageError::STAGE_OUTPUT ); |
| 149 | $output->considerCacheSettingsFinal(); |
| 150 | // T64091: while exceptions are convenient to bubble up GUI errors, |
| 151 | // they are not internal application faults. As with normal requests, this |
| 152 | // should commit, print the output, do deferred updates, jobs, and profiling. |
| 153 | } |
| 154 | |
| 155 | $this->prepareForOutput(); |
| 156 | |
| 157 | // Ask OutputPage/Skin to stage the output (HTTP response body and headers). |
| 158 | // Flush the output to the client unless an exception occurred. |
| 159 | // Note that the OutputPage object in $context may have been replaced, |
| 160 | // so better fetch it again here. |
| 161 | $output = $context->getOutput(); |
| 162 | $this->outputResponsePayload( $output->output( true ) ); |
| 163 | } |
| 164 | |
| 165 | /** |
| 166 | * If the stars are suitably aligned, do an HTTP->HTTPS redirect |
| 167 | * |
| 168 | * Note: Do this after $wgTitle is setup, otherwise the hooks run from |
| 169 | * isRegistered() will do all sorts of weird stuff. |
| 170 | * |
| 171 | * @return bool True if the redirect was done. Handling of the request |
| 172 | * should be aborted. False if no redirect was done. |
| 173 | */ |
| 174 | protected function maybeDoHttpsRedirect() { |
| 175 | if ( !$this->shouldDoHttpRedirect() ) { |
| 176 | return false; |
| 177 | } |
| 178 | |
| 179 | $context = $this->getContext(); |
| 180 | $request = $context->getRequest(); |
| 181 | $oldUrl = $request->getFullRequestURL(); |
| 182 | $redirUrl = preg_replace( '#^http://#', 'https://', $oldUrl ); |
| 183 | |
| 184 | if ( $request->wasPosted() ) { |
| 185 | // This is weird and we'd hope it almost never happens. This |
| 186 | // means that a POST came in via HTTP and policy requires us |
| 187 | // redirecting to HTTPS. It's likely such a request is going |
| 188 | // to fail due to post data being lost, but let's try anyway |
| 189 | // and just log the instance. |
| 190 | |
| 191 | // @todo FIXME: See if we could issue a 307 or 308 here, need |
| 192 | // to see how clients (automated & browser) behave when we do |
| 193 | wfDebugLog( 'RedirectedPosts', "Redirected from HTTP to HTTPS: $oldUrl" ); |
| 194 | } |
| 195 | // Setup dummy Title, otherwise OutputPage::redirect will fail |
| 196 | $title = Title::newFromText( 'REDIR', NS_MAIN ); |
| 197 | $context->setTitle( $title ); |
| 198 | // Since we only do this redir to change proto, always send a vary header |
| 199 | $output = $context->getOutput(); |
| 200 | $output->addVaryHeader( 'X-Forwarded-Proto' ); |
| 201 | $output->redirect( $redirUrl ); |
| 202 | $output->output(); |
| 203 | |
| 204 | return true; |
| 205 | } |
| 206 | |
| 207 | protected function doPrepareForOutput() { |
| 208 | parent::doPrepareForOutput(); |
| 209 | |
| 210 | // If needed, push a deferred update to run jobs after the output is sent |
| 211 | $this->schedulePostSendJobs(); |
| 212 | } |
| 213 | |
| 214 | protected function schedulePostSendJobs() { |
| 215 | // Recursion guard for $wgRunJobsAsync |
| 216 | if ( $this->getTitle()->isSpecial( 'RunJobs' ) ) { |
| 217 | return; |
| 218 | } |
| 219 | |
| 220 | parent::schedulePostSendJobs(); |
| 221 | } |
| 222 | |
| 223 | /** |
| 224 | * Parse the request to get the Title object |
| 225 | * |
| 226 | * @throws MalformedTitleException If a title has been provided by the user, but is invalid. |
| 227 | * @param WebRequest $request |
| 228 | * @return Title Title object to be $wgTitle |
| 229 | */ |
| 230 | protected function parseTitle( $request ) { |
| 231 | $curid = $request->getInt( 'curid' ); |
| 232 | $title = $request->getText( 'title' ); |
| 233 | |
| 234 | $ret = null; |
| 235 | if ( $curid ) { |
| 236 | // URLs like this are generated by RC, because rc_title isn't always accurate |
| 237 | $ret = Title::newFromID( $curid ); |
| 238 | } |
| 239 | if ( $ret === null ) { |
| 240 | $ret = Title::newFromURL( $title ); |
| 241 | if ( $ret !== null ) { |
| 242 | // Alias NS_MEDIA page URLs to NS_FILE...we only use NS_MEDIA |
| 243 | // in wikitext links to tell Parser to make a direct file link |
| 244 | if ( $ret->getNamespace() === NS_MEDIA ) { |
| 245 | $ret = Title::makeTitle( NS_FILE, $ret->getDBkey() ); |
| 246 | } |
| 247 | // Check variant links so that interwiki links don't have to worry |
| 248 | // about the possible different language variants |
| 249 | $services = $this->getServiceContainer(); |
| 250 | $languageConverter = $services |
| 251 | ->getLanguageConverterFactory() |
| 252 | ->getLanguageConverter( $services->getContentLanguage() ); |
| 253 | if ( $languageConverter->hasVariants() && !$ret->exists() ) { |
| 254 | $languageConverter->findVariantLink( $title, $ret ); |
| 255 | } |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | // If title is not provided, always allow oldid and diff to set the title. |
| 260 | // If title is provided, allow oldid and diff to override the title, unless |
| 261 | // we are talking about a special page which might use these parameters for |
| 262 | // other purposes. |
| 263 | if ( $ret === null || !$ret->isSpecialPage() ) { |
| 264 | // We can have urls with just ?diff=,?oldid= or even just ?diff= |
| 265 | $oldid = $request->getInt( 'oldid' ); |
| 266 | $oldid = $oldid ?: $request->getInt( 'diff' ); |
| 267 | // Allow oldid to override a changed or missing title |
| 268 | if ( $oldid ) { |
| 269 | $revRecord = $this->getServiceContainer() |
| 270 | ->getRevisionLookup() |
| 271 | ->getRevisionById( $oldid ); |
| 272 | if ( $revRecord ) { |
| 273 | $ret = Title::newFromLinkTarget( |
| 274 | $revRecord->getPageAsLinkTarget() |
| 275 | ); |
| 276 | } |
| 277 | } |
| 278 | } |
| 279 | |
| 280 | if ( $ret === null && $request->getCheck( 'search' ) ) { |
| 281 | // Compatibility with old search URLs which didn't use Special:Search |
| 282 | // Just check for presence here, so blank requests still |
| 283 | // show the search page when using ugly URLs (T10054). |
| 284 | $ret = SpecialPage::getTitleFor( 'Search' ); |
| 285 | } |
| 286 | |
| 287 | if ( $ret === null || !$ret->isSpecialPage() ) { |
| 288 | // Compatibility with old URLs for Special:RevisionDelete/Special:EditTags (T323338) |
| 289 | $actionName = $request->getRawVal( 'action' ); |
| 290 | if ( |
| 291 | $actionName === 'revisiondelete' || |
| 292 | ( $actionName === 'historysubmit' && $request->getBool( 'revisiondelete' ) ) |
| 293 | ) { |
| 294 | $ret = SpecialPage::getTitleFor( 'Revisiondelete' ); |
| 295 | } elseif ( |
| 296 | $actionName === 'editchangetags' || |
| 297 | ( $actionName === 'historysubmit' && $request->getBool( 'editchangetags' ) ) |
| 298 | ) { |
| 299 | $ret = SpecialPage::getTitleFor( 'EditTags' ); |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | // Use the main page as default title if nothing else has been provided |
| 304 | if ( $ret === null |
| 305 | && strval( $title ) === '' |
| 306 | && !$request->getCheck( 'curid' ) |
| 307 | && $request->getRawVal( 'action' ) !== 'delete' |
| 308 | ) { |
| 309 | $ret = Title::newMainPage(); |
| 310 | } |
| 311 | |
| 312 | if ( $ret === null || ( $ret->getDBkey() == '' && !$ret->isExternal() ) ) { |
| 313 | // If we get here, we definitely don't have a valid title; throw an exception. |
| 314 | // Try to get detailed invalid title exception first, fall back to MalformedTitleException. |
| 315 | Title::newFromTextThrow( $title ); |
| 316 | throw new MalformedTitleException( 'badtitletext', $title ); |
| 317 | } |
| 318 | |
| 319 | return $ret; |
| 320 | } |
| 321 | |
| 322 | /** |
| 323 | * Get the Title object that we'll be acting on, as specified in the WebRequest |
| 324 | * @return Title |
| 325 | */ |
| 326 | public function getTitle() { |
| 327 | $context = $this->getContext(); |
| 328 | |
| 329 | if ( !$context->hasTitle() ) { |
| 330 | try { |
| 331 | $context->setTitle( $this->parseTitle( $context->getRequest() ) ); |
| 332 | } catch ( MalformedTitleException $ex ) { |
| 333 | $context->setTitle( SpecialPage::getTitleFor( 'Badtitle' ) ); |
| 334 | } |
| 335 | } |
| 336 | return $context->getTitle(); |
| 337 | } |
| 338 | |
| 339 | /** |
| 340 | * Returns the name of the action that will be executed. |
| 341 | * |
| 342 | * @note This is public for the benefit of extensions that implement |
| 343 | * the BeforeInitialize or MediaWikiPerformAction hooks. |
| 344 | * |
| 345 | * @return string Action |
| 346 | */ |
| 347 | public function getAction(): string { |
| 348 | return $this->getContext()->getActionName(); |
| 349 | } |
| 350 | |
| 351 | /** |
| 352 | * Performs the request. |
| 353 | * - bad titles |
| 354 | * - read restriction |
| 355 | * - local interwiki redirects |
| 356 | * - redirect loop |
| 357 | * - special pages |
| 358 | * - normal pages |
| 359 | * |
| 360 | * @throws PermissionsError|BadTitleError|HttpError |
| 361 | * @return void |
| 362 | */ |
| 363 | protected function performRequest() { |
| 364 | global $wgTitle; |
| 365 | |
| 366 | $context = $this->getContext(); |
| 367 | |
| 368 | $request = $context->getRequest(); |
| 369 | $output = $context->getOutput(); |
| 370 | |
| 371 | if ( $request->getRawVal( 'printable' ) === 'yes' ) { |
| 372 | $output->setPrintable(); |
| 373 | } |
| 374 | |
| 375 | $user = $context->getUser(); |
| 376 | $title = $context->getTitle(); |
| 377 | $requestTitle = $title; |
| 378 | |
| 379 | $userOptionsLookup = $this->getServiceContainer()->getUserOptionsLookup(); |
| 380 | if ( $userOptionsLookup->getBoolOption( $user, 'forcesafemode' ) ) { |
| 381 | $request->setVal( 'safemode', '1' ); |
| 382 | } |
| 383 | |
| 384 | $this->getHookRunner()->onBeforeInitialize( $title, null, $output, $user, $request, $this ); |
| 385 | |
| 386 | // Invalid titles. T23776: The interwikis must redirect even if the page name is empty. |
| 387 | if ( $title === null || ( $title->getDBkey() == '' && !$title->isExternal() ) |
| 388 | || $title->isSpecial( 'Badtitle' ) |
| 389 | ) { |
| 390 | $context->setTitle( SpecialPage::getTitleFor( 'Badtitle' ) ); |
| 391 | try { |
| 392 | $this->parseTitle( $request ); |
| 393 | } catch ( MalformedTitleException $ex ) { |
| 394 | throw new BadTitleError( $ex ); |
| 395 | } |
| 396 | throw new BadTitleError(); |
| 397 | } |
| 398 | |
| 399 | // Check user's permissions to read this page. |
| 400 | // We have to check here to catch special pages etc. |
| 401 | // We will check again in Article::view(). |
| 402 | $permissionStatus = PermissionStatus::newEmpty(); |
| 403 | if ( !$context->getAuthority()->authorizeRead( 'read', $title, $permissionStatus ) ) { |
| 404 | // T34276: allowing the skin to generate output with $wgTitle or |
| 405 | // $context->title set to the input title would allow anonymous users to |
| 406 | // determine whether a page exists, potentially leaking private data. In fact, the |
| 407 | // curid and oldid request parameters would allow page titles to be enumerated even |
| 408 | // when they are not guessable. So we reset the title to Special:Badtitle before the |
| 409 | // permissions error is displayed. |
| 410 | |
| 411 | // The skin mostly uses $context->getTitle() these days, but some extensions |
| 412 | // still use $wgTitle. |
| 413 | $badTitle = SpecialPage::getTitleFor( 'Badtitle' ); |
| 414 | $context->setTitle( $badTitle ); |
| 415 | $wgTitle = $badTitle; |
| 416 | |
| 417 | throw new PermissionsError( 'read', $permissionStatus ); |
| 418 | } |
| 419 | |
| 420 | // Interwiki redirects |
| 421 | if ( $title->isExternal() ) { |
| 422 | $rdfrom = $request->getVal( 'rdfrom' ); |
| 423 | if ( $rdfrom ) { |
| 424 | $url = $title->getFullURL( [ 'rdfrom' => $rdfrom ] ); |
| 425 | } else { |
| 426 | $query = $request->getValues(); |
| 427 | unset( $query['title'] ); |
| 428 | $url = $title->getFullURL( $query ); |
| 429 | } |
| 430 | // Check for a redirect loop |
| 431 | if ( $url !== $request->getFullRequestURL() && $title->isLocal() ) { |
| 432 | // 301 so google et al report the target as the actual url. |
| 433 | $output->redirect( $url, 301 ); |
| 434 | } else { |
| 435 | $context->setTitle( SpecialPage::getTitleFor( 'Badtitle' ) ); |
| 436 | try { |
| 437 | $this->parseTitle( $request ); |
| 438 | } catch ( MalformedTitleException $ex ) { |
| 439 | throw new BadTitleError( $ex ); |
| 440 | } |
| 441 | throw new BadTitleError(); |
| 442 | } |
| 443 | // Handle any other redirects. |
| 444 | // Redirect loops, titleless URL, $wgUsePathInfo URLs, and URLs with a variant |
| 445 | } elseif ( !$this->tryNormaliseRedirect( $title ) ) { |
| 446 | // Prevent information leak via Special:MyPage et al (T109724) |
| 447 | $spFactory = $this->getServiceContainer()->getSpecialPageFactory(); |
| 448 | if ( $title->isSpecialPage() ) { |
| 449 | $specialPage = $spFactory->getPage( $title->getDBkey() ); |
| 450 | if ( $specialPage instanceof RedirectSpecialPage ) { |
| 451 | $specialPage->setContext( $context ); |
| 452 | if ( $this->getConfig( MainConfigNames::HideIdentifiableRedirects ) |
| 453 | && $specialPage->personallyIdentifiableTarget() |
| 454 | ) { |
| 455 | [ , $subpage ] = $spFactory->resolveAlias( $title->getDBkey() ); |
| 456 | $target = $specialPage->getRedirect( $subpage ); |
| 457 | // Target can also be true. We let that case fall through to normal processing. |
| 458 | if ( $target instanceof Title ) { |
| 459 | if ( $target->isExternal() ) { |
| 460 | // Handle interwiki redirects |
| 461 | $target = SpecialPage::getTitleFor( |
| 462 | 'GoToInterwiki', |
| 463 | 'force/' . $target->getPrefixedDBkey() |
| 464 | ); |
| 465 | } |
| 466 | |
| 467 | $query = $specialPage->getRedirectQuery( $subpage ) ?: []; |
| 468 | $derivateRequest = new DerivativeRequest( $request, $query ); |
| 469 | $derivateRequest->setRequestURL( $request->getRequestURL() ); |
| 470 | $context->setRequest( $derivateRequest ); |
| 471 | // Do not varnish cache these. May vary even for anons |
| 472 | $output->lowerCdnMaxage( 0 ); |
| 473 | // NOTE: This also clears any action cache. |
| 474 | // Action should not have been computed yet, but if it was, |
| 475 | // we reset it because special pages only support "view". |
| 476 | $context->setTitle( $target ); |
| 477 | $wgTitle = $target; |
| 478 | $title = $target; |
| 479 | $output->addJsConfigVars( [ |
| 480 | 'wgInternalRedirectTargetUrl' => $target->getLinkURL( $query ), |
| 481 | ] ); |
| 482 | $output->addModules( 'mediawiki.action.view.redirect' ); |
| 483 | |
| 484 | // If the title is invalid, redirect but show the correct bad title error - T297407 |
| 485 | if ( !$target->isValid() ) { |
| 486 | try { |
| 487 | $this->getServiceContainer()->getTitleParser() |
| 488 | ->parseTitle( $target->getPrefixedText() ); |
| 489 | } catch ( MalformedTitleException $ex ) { |
| 490 | throw new BadTitleError( $ex ); |
| 491 | } |
| 492 | throw new BadTitleError(); |
| 493 | } |
| 494 | } |
| 495 | } |
| 496 | } |
| 497 | } |
| 498 | |
| 499 | // Special pages ($title may have changed since if statement above) |
| 500 | if ( $title->isSpecialPage() ) { |
| 501 | // Actions that need to be made when we have a special pages |
| 502 | $spFactory->executePath( $title, $context ); |
| 503 | } else { |
| 504 | // ...otherwise treat it as an article view. The article |
| 505 | // may still be a wikipage redirect to another article or URL. |
| 506 | $article = $this->initializeArticle(); |
| 507 | if ( is_object( $article ) ) { |
| 508 | $this->performAction( $article, $requestTitle ); |
| 509 | } elseif ( is_string( $article ) ) { |
| 510 | $output->redirect( $article ); |
| 511 | } else { |
| 512 | throw new UnexpectedValueException( "Shouldn't happen: MediaWiki::initializeArticle()" |
| 513 | . " returned neither an object nor a URL" ); |
| 514 | } |
| 515 | } |
| 516 | $output->considerCacheSettingsFinal(); |
| 517 | } |
| 518 | } |
| 519 | |
| 520 | /** |
| 521 | * Handle redirects for uncanonical title requests. |
| 522 | * |
| 523 | * Handles: |
| 524 | * - Redirect loops. |
| 525 | * - No title in URL. |
| 526 | * - $wgUsePathInfo URLs. |
| 527 | * - URLs with a variant. |
| 528 | * - Other non-standard URLs (as long as they have no extra query parameters). |
| 529 | * |
| 530 | * Behaviour: |
| 531 | * - Normalise title values: |
| 532 | * /wiki/Foo%20Bar -> /wiki/Foo_Bar |
| 533 | * - Normalise empty title: |
| 534 | * /wiki/ -> /wiki/Main |
| 535 | * /w/index.php?title= -> /wiki/Main |
| 536 | * - Don't redirect anything with query parameters other than 'title' or 'action=view'. |
| 537 | * |
| 538 | * @param Title $title |
| 539 | * @return bool True if a redirect was set. |
| 540 | * @throws HttpError |
| 541 | */ |
| 542 | protected function tryNormaliseRedirect( Title $title ): bool { |
| 543 | $request = $this->getRequest(); |
| 544 | $output = $this->getOutput(); |
| 545 | |
| 546 | if ( $request->getRawVal( 'action', 'view' ) != 'view' |
| 547 | || $request->wasPosted() |
| 548 | || ( $request->getCheck( 'title' ) |
| 549 | && $title->getPrefixedDBkey() == $request->getText( 'title' ) ) |
| 550 | || count( $request->getValueNames( [ 'action', 'title' ] ) ) |
| 551 | || !$this->getHookRunner()->onTestCanonicalRedirect( $request, $title, $output ) |
| 552 | ) { |
| 553 | return false; |
| 554 | } |
| 555 | |
| 556 | if ( $this->getConfig( MainConfigNames::MainPageIsDomainRoot ) && $request->getRequestURL() === '/' ) { |
| 557 | return false; |
| 558 | } |
| 559 | |
| 560 | $services = $this->getServiceContainer(); |
| 561 | |
| 562 | if ( $title->isSpecialPage() ) { |
| 563 | [ $name, $subpage ] = $services->getSpecialPageFactory() |
| 564 | ->resolveAlias( $title->getDBkey() ); |
| 565 | |
| 566 | if ( $name ) { |
| 567 | $title = SpecialPage::getTitleFor( $name, $subpage ); |
| 568 | } |
| 569 | } |
| 570 | // Redirect to canonical url, make it a 301 to allow caching |
| 571 | $targetUrl = (string)$services->getUrlUtils()->expand( $title->getFullURL(), PROTO_CURRENT ); |
| 572 | if ( $targetUrl == $request->getFullRequestURL() ) { |
| 573 | $message = "Redirect loop detected!\n\n" . |
| 574 | "This means the wiki got confused about what page was " . |
| 575 | "requested; this sometimes happens when moving a wiki " . |
| 576 | "to a new server or changing the server configuration.\n\n"; |
| 577 | |
| 578 | if ( $this->getConfig( MainConfigNames::UsePathInfo ) ) { |
| 579 | $message .= "The wiki is trying to interpret the page " . |
| 580 | "title from the URL path portion (PATH_INFO), which " . |
| 581 | "sometimes fails depending on the web server. Try " . |
| 582 | "setting \"\$wgUsePathInfo = false;\" in your " . |
| 583 | "LocalSettings.php, or check that \$wgArticlePath " . |
| 584 | "is correct."; |
| 585 | } else { |
| 586 | $message .= "Your web server was detected as possibly not " . |
| 587 | "supporting URL path components (PATH_INFO) correctly; " . |
| 588 | "check your LocalSettings.php for a customized " . |
| 589 | "\$wgArticlePath setting and/or toggle \$wgUsePathInfo " . |
| 590 | "to true."; |
| 591 | } |
| 592 | throw new HttpError( 500, $message ); |
| 593 | } |
| 594 | $output->setCdnMaxage( 1200 ); |
| 595 | $output->redirect( $targetUrl, '301' ); |
| 596 | return true; |
| 597 | } |
| 598 | |
| 599 | /** |
| 600 | * Initialize the main Article object for "standard" actions (view, etc) |
| 601 | * Create an Article object for the page, following redirects if needed. |
| 602 | * |
| 603 | * @return Article|string An Article, or a string to redirect to another URL |
| 604 | */ |
| 605 | protected function initializeArticle() { |
| 606 | $context = $this->getContext(); |
| 607 | |
| 608 | $title = $context->getTitle(); |
| 609 | $services = $this->getServiceContainer(); |
| 610 | if ( $context->canUseWikiPage() ) { |
| 611 | // Optimization: Reuse the WikiPage instance from context, to avoid |
| 612 | // repeat fetching or computation of data already loaded. |
| 613 | $page = $context->getWikiPage(); |
| 614 | } else { |
| 615 | // This case should not happen, but just in case. |
| 616 | // @TODO: remove this or use an exception |
| 617 | $page = $services->getWikiPageFactory()->newFromTitle( $title ); |
| 618 | $context->setWikiPage( $page ); |
| 619 | wfWarn( "RequestContext::canUseWikiPage() returned false" ); |
| 620 | } |
| 621 | |
| 622 | // Make GUI wrapper for the WikiPage |
| 623 | $article = Article::newFromWikiPage( $page, $context ); |
| 624 | |
| 625 | // Skip some unnecessary code if the content model doesn't support redirects |
| 626 | // Use the page content model rather than invoking Title::getContentModel() |
| 627 | // to avoid querying page data twice (T206498) |
| 628 | if ( !$page->getContentHandler()->supportsRedirects() ) { |
| 629 | return $article; |
| 630 | } |
| 631 | |
| 632 | $request = $context->getRequest(); |
| 633 | |
| 634 | // Namespace might change when using redirects |
| 635 | // Check for redirects ... |
| 636 | $action = $request->getRawVal( 'action', 'view' ); |
| 637 | $file = ( $page instanceof WikiFilePage ) ? $page->getFile() : null; |
| 638 | if ( ( $action == 'view' || $action == 'render' ) // ... for actions that show content |
| 639 | && !$request->getCheck( 'oldid' ) // ... and are not old revisions |
| 640 | && !$request->getCheck( 'diff' ) // ... and not when showing diff |
| 641 | && $request->getRawVal( 'redirect' ) !== 'no' // ... unless explicitly told not to |
| 642 | // ... and the article is not a non-redirect image page with associated file |
| 643 | && !( is_object( $file ) && $file->exists() && !$file->getRedirected() ) |
| 644 | ) { |
| 645 | // Give extensions a change to ignore/handle redirects as needed |
| 646 | $ignoreRedirect = $target = false; |
| 647 | |
| 648 | $this->getHookRunner()->onInitializeArticleMaybeRedirect( $title, $request, |
| 649 | // @phan-suppress-next-line PhanTypeMismatchArgument Type mismatch on pass-by-ref args |
| 650 | $ignoreRedirect, $target, $article ); |
| 651 | $page = $article->getPage(); // reflect any hook changes |
| 652 | |
| 653 | // Follow redirects only for... redirects. |
| 654 | // If $target is set, then a hook wanted to redirect. |
| 655 | if ( !$ignoreRedirect && ( $target || $page->isRedirect() ) ) { |
| 656 | // Is the target already set by an extension? |
| 657 | $target = $target ?: $page->followRedirect(); |
| 658 | if ( is_string( $target ) && !$this->getConfig( MainConfigNames::DisableHardRedirects ) ) { |
| 659 | // we'll need to redirect |
| 660 | return $target; |
| 661 | } |
| 662 | if ( is_object( $target ) ) { |
| 663 | // Rewrite environment to redirected article |
| 664 | $rpage = $services->getWikiPageFactory()->newFromTitle( $target ); |
| 665 | $rpage->loadPageData(); |
| 666 | if ( $rpage->exists() || ( is_object( $file ) && !$file->isLocal() ) ) { |
| 667 | $rarticle = Article::newFromWikiPage( $rpage, $context ); |
| 668 | $rarticle->setRedirectedFrom( $title ); |
| 669 | |
| 670 | $article = $rarticle; |
| 671 | // NOTE: This also clears any action cache |
| 672 | $context->setTitle( $target ); |
| 673 | $context->setWikiPage( $article->getPage() ); |
| 674 | } |
| 675 | } |
| 676 | } |
| 677 | } |
| 678 | |
| 679 | return $article; |
| 680 | } |
| 681 | |
| 682 | /** |
| 683 | * Perform one of the "standard" actions |
| 684 | * |
| 685 | * @param Article $article |
| 686 | * @param Title $requestTitle The original title, before any redirects were applied |
| 687 | */ |
| 688 | protected function performAction( Article $article, Title $requestTitle ) { |
| 689 | $request = $this->getRequest(); |
| 690 | $output = $this->getOutput(); |
| 691 | $title = $this->getTitle(); |
| 692 | $user = $this->getUser(); |
| 693 | |
| 694 | if ( !$this->getHookRunner()->onMediaWikiPerformAction( |
| 695 | $output, $article, $title, $user, $request, $this ) |
| 696 | ) { |
| 697 | return; |
| 698 | } |
| 699 | |
| 700 | $t = microtime( true ); |
| 701 | $actionName = $this->getAction(); |
| 702 | $services = $this->getServiceContainer(); |
| 703 | |
| 704 | $action = $services->getActionFactory()->getAction( $actionName, $article, $this->getContext() ); |
| 705 | if ( $action instanceof Action ) { |
| 706 | ProfilingContext::singleton()->init( MW_ENTRY_POINT, $actionName ); |
| 707 | |
| 708 | // Check read permissions |
| 709 | if ( $action->needsReadRights() && !$user->isAllowed( 'read' ) ) { |
| 710 | throw new PermissionsError( 'read' ); |
| 711 | } |
| 712 | |
| 713 | // Narrow DB query expectations for this HTTP request |
| 714 | if ( $request->wasPosted() && !$action->doesWrites() ) { |
| 715 | $trxProfiler = Profiler::instance()->getTransactionProfiler(); |
| 716 | $trxLimits = $this->getConfig( MainConfigNames::TrxProfilerLimits ); |
| 717 | $trxProfiler->setExpectations( $trxLimits['POST-nonwrite'], __METHOD__ ); |
| 718 | } |
| 719 | |
| 720 | // Let CDN cache things if we can purge them. |
| 721 | // Also unconditionally cache page views. |
| 722 | if ( $this->getConfig( MainConfigNames::UseCdn ) ) { |
| 723 | $htmlCacheUpdater = $services->getHtmlCacheUpdater(); |
| 724 | if ( $request->matchURLForCDN( $htmlCacheUpdater->getUrls( $requestTitle ) ) ) { |
| 725 | $output->setCdnMaxage( $this->getConfig( MainConfigNames::CdnMaxAge ) ); |
| 726 | } elseif ( $action instanceof ViewAction ) { |
| 727 | $output->setCdnMaxage( 3600 ); |
| 728 | } |
| 729 | } |
| 730 | |
| 731 | $action->show(); |
| 732 | |
| 733 | $runTime = microtime( true ) - $t; |
| 734 | |
| 735 | $statAction = strtr( $actionName, '.', '_' ); |
| 736 | $services->getStatsFactory()->getTiming( 'action_executeTiming_seconds' ) |
| 737 | ->setLabel( 'action', $statAction ) |
| 738 | ->copyToStatsdAt( 'action.' . $statAction . '.executeTiming' ) |
| 739 | ->observe( 1000 * $runTime ); |
| 740 | |
| 741 | return; |
| 742 | } |
| 743 | |
| 744 | // If we've not found out which action it is by now, it's unknown |
| 745 | $output->setStatusCode( 404 ); |
| 746 | $output->showErrorPage( 'nosuchaction', 'nosuchactiontext' ); |
| 747 | } |
| 748 | } |