750 lines
26 KiB
PHP
750 lines
26 KiB
PHP
<?php
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namespace MediaWiki\Actions;
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use Action;
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use Article;
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use BadTitleError;
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use ErrorPageError;
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use HTMLFileCache;
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use HttpError;
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use MediaWiki\Context\RequestContext;
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use MediaWiki\Logger\LoggerFactory;
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use MediaWiki\MainConfigNames;
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use MediaWiki\MediaWikiEntryPoint;
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use MediaWiki\Output\OutputPage;
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use MediaWiki\Permissions\PermissionStatus;
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use MediaWiki\Profiler\ProfilingContext;
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use MediaWiki\Request\DerivativeRequest;
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use MediaWiki\Request\WebRequest;
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use MediaWiki\SpecialPage\RedirectSpecialPage;
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use MediaWiki\SpecialPage\SpecialPage;
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use MediaWiki\Title\MalformedTitleException;
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use MediaWiki\Title\Title;
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use MediaWiki\User\User;
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use MWExceptionRenderer;
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use PermissionsError;
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use Profiler;
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use Throwable;
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use UnexpectedValueException;
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use ViewAction;
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use WikiFilePage;
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use Wikimedia\Rdbms\DBConnectionError;
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/**
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* The index.php entry point for web browser navigations, usually routed to
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* an Action or SpecialPage subclass.
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*
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* @internal For use in index.php
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* @ingroup entrypoint
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*/
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class ActionEntryPoint extends MediaWikiEntryPoint {
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/**
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* Overwritten to narrow the return type to RequestContext
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* @return RequestContext
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*/
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protected function getContext(): RequestContext {
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/** @var RequestContext $context */
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$context = parent::getContext();
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// @phan-suppress-next-line PhanTypeMismatchReturnSuperType see $context in the constructor
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return $context;
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}
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protected function getOutput(): OutputPage {
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return $this->getContext()->getOutput();
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}
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protected function getUser(): User {
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return $this->getContext()->getUser();
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}
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protected function handleTopLevelError( Throwable $e ) {
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$context = $this->getContext();
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$action = $context->getRequest()->getRawVal( 'action', 'view' );
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if (
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$e instanceof DBConnectionError &&
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$context->hasTitle() &&
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$context->getTitle()->canExist() &&
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in_array( $action, [ 'view', 'history' ], true ) &&
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HTMLFileCache::useFileCache( $context, HTMLFileCache::MODE_OUTAGE )
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) {
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// Try to use any (even stale) file during outages...
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$cache = new HTMLFileCache( $context->getTitle(), $action );
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if ( $cache->isCached() ) {
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$cache->loadFromFileCache( $context, HTMLFileCache::MODE_OUTAGE );
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$this->print( MWExceptionRenderer::getHTML( $e ) );
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$this->exit();
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}
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}
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parent::handleTopLevelError( $e );
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}
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/**
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* Determine and send the response headers and body for this web request
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*/
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protected function execute() {
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global $wgTitle;
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// Get title from request parameters,
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// is set on the fly by parseTitle the first time.
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$title = $this->getTitle();
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$wgTitle = $title;
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$request = $this->getContext()->getRequest();
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// Set DB query expectations for this HTTP request
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$trxLimits = $this->getConfig( MainConfigNames::TrxProfilerLimits );
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$trxProfiler = Profiler::instance()->getTransactionProfiler();
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$trxProfiler->setLogger( LoggerFactory::getInstance( 'rdbms' ) );
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$trxProfiler->setStatsdDataFactory( $this->getStatsdDataFactory() );
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$trxProfiler->setRequestMethod( $request->getMethod() );
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if ( $request->hasSafeMethod() ) {
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$trxProfiler->setExpectations( $trxLimits['GET'], __METHOD__ );
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} else {
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$trxProfiler->setExpectations( $trxLimits['POST'], __METHOD__ );
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}
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if ( $this->maybeDoHttpsRedirect() ) {
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return;
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}
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$context = $this->getContext();
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$output = $context->getOutput();
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// NOTE: HTMLFileCache::useFileCache() is not used in WMF production but is
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// here to provide third-party wikis with a way to enable caching for
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// "view" and "history" actions. It's triggered by the use of $wgUseFileCache
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// when set to true in LocalSettings.php.
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if ( $title->canExist() && HTMLFileCache::useFileCache( $context ) ) {
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// getAction() may trigger DB queries, so avoid eagerly initializing it if possible.
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// This reduces the cost of requests that exit early due to tryNormaliseRedirect()
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// or a MediaWikiPerformAction / BeforeInitialize hook handler.
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$action = $this->getAction();
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// Try low-level file cache hit
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$cache = new HTMLFileCache( $title, $action );
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if ( $cache->isCacheGood( /* Assume up to date */ ) ) {
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// Check incoming headers to see if client has this cached
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$timestamp = $cache->cacheTimestamp();
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if ( !$output->checkLastModified( $timestamp ) ) {
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$cache->loadFromFileCache( $context );
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}
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// Do any stats increment/watchlist stuff, assuming user is viewing the
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// latest revision (which should always be the case for file cache)
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$context->getWikiPage()->doViewUpdates( $context->getAuthority() );
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// Tell OutputPage that output is taken care of
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$output->disable();
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return;
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}
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}
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try {
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// Actually do the work of the request and build up any output
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$this->performRequest();
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} catch ( ErrorPageError $e ) {
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// TODO: Should ErrorPageError::report accept a OutputPage parameter?
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$e->report( ErrorPageError::STAGE_OUTPUT );
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$output->considerCacheSettingsFinal();
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// T64091: while exceptions are convenient to bubble up GUI errors,
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// they are not internal application faults. As with normal requests, this
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// should commit, print the output, do deferred updates, jobs, and profiling.
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}
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$this->prepareForOutput();
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// Ask OutputPage/Skin to stage the output (HTTP response body and headers).
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// Flush the output to the client unless an exception occurred.
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// Note that the OutputPage object in $context may have been replaced,
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// so better fetch it again here.
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$output = $context->getOutput();
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$this->outputResponsePayload( $output->output( true ) );
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}
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/**
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* If the stars are suitably aligned, do an HTTP->HTTPS redirect
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*
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* Note: Do this after $wgTitle is setup, otherwise the hooks run from
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* isRegistered() will do all sorts of weird stuff.
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*
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* @return bool True if the redirect was done. Handling of the request
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* should be aborted. False if no redirect was done.
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*/
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protected function maybeDoHttpsRedirect() {
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if ( !$this->shouldDoHttpRedirect() ) {
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return false;
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}
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$context = $this->getContext();
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$request = $context->getRequest();
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$oldUrl = $request->getFullRequestURL();
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$redirUrl = preg_replace( '#^http://#', 'https://', $oldUrl );
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if ( $request->wasPosted() ) {
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// This is weird and we'd hope it almost never happens. This
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// means that a POST came in via HTTP and policy requires us
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// redirecting to HTTPS. It's likely such a request is going
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// to fail due to post data being lost, but let's try anyway
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// and just log the instance.
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// @todo FIXME: See if we could issue a 307 or 308 here, need
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// to see how clients (automated & browser) behave when we do
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wfDebugLog( 'RedirectedPosts', "Redirected from HTTP to HTTPS: $oldUrl" );
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}
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// Setup dummy Title, otherwise OutputPage::redirect will fail
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$title = Title::newFromText( 'REDIR', NS_MAIN );
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$context->setTitle( $title );
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// Since we only do this redir to change proto, always send a vary header
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$output = $context->getOutput();
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$output->addVaryHeader( 'X-Forwarded-Proto' );
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$output->redirect( $redirUrl );
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$output->output();
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return true;
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}
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protected function doPrepareForOutput() {
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parent::doPrepareForOutput();
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// If needed, push a deferred update to run jobs after the output is sent
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$this->schedulePostSendJobs();
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}
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protected function schedulePostSendJobs() {
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// Recursion guard for $wgRunJobsAsync
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if ( $this->getTitle()->isSpecial( 'RunJobs' ) ) {
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return;
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}
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parent::schedulePostSendJobs();
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}
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/**
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* Parse the request to get the Title object
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*
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* @throws MalformedTitleException If a title has been provided by the user, but is invalid.
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* @param WebRequest $request
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* @return Title Title object to be $wgTitle
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*/
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protected function parseTitle( $request ) {
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$curid = $request->getInt( 'curid' );
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$title = $request->getText( 'title' );
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$ret = null;
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if ( $curid ) {
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// URLs like this are generated by RC, because rc_title isn't always accurate
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$ret = Title::newFromID( $curid );
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}
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if ( $ret === null ) {
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$ret = Title::newFromURL( $title );
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if ( $ret !== null ) {
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// Alias NS_MEDIA page URLs to NS_FILE...we only use NS_MEDIA
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// in wikitext links to tell Parser to make a direct file link
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if ( $ret->getNamespace() === NS_MEDIA ) {
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$ret = Title::makeTitle( NS_FILE, $ret->getDBkey() );
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}
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// Check variant links so that interwiki links don't have to worry
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// about the possible different language variants
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$services = $this->getServiceContainer();
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$languageConverter = $services
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->getLanguageConverterFactory()
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->getLanguageConverter( $services->getContentLanguage() );
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if ( $languageConverter->hasVariants() && !$ret->exists() ) {
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$languageConverter->findVariantLink( $title, $ret );
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}
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}
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}
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// If title is not provided, always allow oldid and diff to set the title.
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// If title is provided, allow oldid and diff to override the title, unless
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// we are talking about a special page which might use these parameters for
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// other purposes.
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if ( $ret === null || !$ret->isSpecialPage() ) {
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// We can have urls with just ?diff=,?oldid= or even just ?diff=
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$oldid = $request->getInt( 'oldid' );
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$oldid = $oldid ?: $request->getInt( 'diff' );
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// Allow oldid to override a changed or missing title
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if ( $oldid ) {
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$revRecord = $this->getServiceContainer()
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->getRevisionLookup()
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->getRevisionById( $oldid );
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if ( $revRecord ) {
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$ret = Title::newFromLinkTarget(
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$revRecord->getPageAsLinkTarget()
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);
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}
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}
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}
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if ( $ret === null && $request->getCheck( 'search' ) ) {
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// Compatibility with old search URLs which didn't use Special:Search
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// Just check for presence here, so blank requests still
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// show the search page when using ugly URLs (T10054).
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$ret = SpecialPage::getTitleFor( 'Search' );
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}
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if ( $ret === null || !$ret->isSpecialPage() ) {
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// Compatibility with old URLs for Special:RevisionDelete/Special:EditTags (T323338)
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$actionName = $request->getRawVal( 'action' );
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if (
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$actionName === 'revisiondelete' ||
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$actionName === 'historysubmit' && $request->getBool( 'revisiondelete' )
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) {
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$ret = SpecialPage::getTitleFor( 'Revisiondelete' );
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} elseif (
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$actionName === 'editchangetags' ||
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$actionName === 'historysubmit' && $request->getBool( 'editchangetags' )
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) {
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$ret = SpecialPage::getTitleFor( 'EditTags' );
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}
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}
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// Use the main page as default title if nothing else has been provided
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if ( $ret === null
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&& strval( $title ) === ''
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&& !$request->getCheck( 'curid' )
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&& $request->getRawVal( 'action' ) !== 'delete'
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) {
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$ret = Title::newMainPage();
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}
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if ( $ret === null || ( $ret->getDBkey() == '' && !$ret->isExternal() ) ) {
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// If we get here, we definitely don't have a valid title; throw an exception.
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// Try to get detailed invalid title exception first, fall back to MalformedTitleException.
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Title::newFromTextThrow( $title );
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throw new MalformedTitleException( 'badtitletext', $title );
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}
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return $ret;
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}
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/**
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* Get the Title object that we'll be acting on, as specified in the WebRequest
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* @return Title
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*/
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public function getTitle() {
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$context = $this->getContext();
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if ( !$context->hasTitle() ) {
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try {
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$context->setTitle( $this->parseTitle( $context->getRequest() ) );
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} catch ( MalformedTitleException $ex ) {
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$context->setTitle( SpecialPage::getTitleFor( 'Badtitle' ) );
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}
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}
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return $context->getTitle();
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}
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/**
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* Returns the name of the action that will be executed.
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*
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* @note This is public for the benefit of extensions that implement
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* the BeforeInitialize or MediaWikiPerformAction hooks.
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*
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* @return string Action
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*/
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public function getAction(): string {
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return $this->getContext()->getActionName();
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}
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/**
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* Performs the request.
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* - bad titles
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* - read restriction
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* - local interwiki redirects
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* - redirect loop
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* - special pages
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* - normal pages
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*
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* @throws PermissionsError|BadTitleError|HttpError
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* @return void
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*/
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protected function performRequest() {
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global $wgTitle;
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$context = $this->getContext();
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$request = $context->getRequest();
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$output = $context->getOutput();
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if ( $request->getRawVal( 'printable' ) === 'yes' ) {
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$output->setPrintable();
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}
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$user = $context->getUser();
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$title = $context->getTitle();
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$requestTitle = $title;
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$userOptionsLookup = $this->getServiceContainer()->getUserOptionsLookup();
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if ( $userOptionsLookup->getBoolOption( $user, 'forcesafemode' ) ) {
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$request->setVal( 'safemode', '1' );
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}
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$this->getHookRunner()->onBeforeInitialize( $title, null, $output, $user, $request, $this );
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// Invalid titles. T23776: The interwikis must redirect even if the page name is empty.
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if ( $title === null || ( $title->getDBkey() == '' && !$title->isExternal() )
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|| $title->isSpecial( 'Badtitle' )
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) {
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$context->setTitle( SpecialPage::getTitleFor( 'Badtitle' ) );
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try {
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$this->parseTitle( $request );
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} catch ( MalformedTitleException $ex ) {
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throw new BadTitleError( $ex );
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}
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throw new BadTitleError();
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}
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// Check user's permissions to read this page.
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// We have to check here to catch special pages etc.
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// We will check again in Article::view().
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$permissionStatus = PermissionStatus::newEmpty();
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if ( !$context->getAuthority()->authorizeRead( 'read', $title, $permissionStatus ) ) {
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// T34276: allowing the skin to generate output with $wgTitle or
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// $context->title set to the input title would allow anonymous users to
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// determine whether a page exists, potentially leaking private data. In fact, the
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// curid and oldid request parameters would allow page titles to be enumerated even
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// when they are not guessable. So we reset the title to Special:Badtitle before the
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// permissions error is displayed.
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// The skin mostly uses $context->getTitle() these days, but some extensions
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// still use $wgTitle.
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$badTitle = SpecialPage::getTitleFor( 'Badtitle' );
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$context->setTitle( $badTitle );
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$wgTitle = $badTitle;
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throw new PermissionsError( 'read', $permissionStatus );
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}
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// Interwiki redirects
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if ( $title->isExternal() ) {
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$rdfrom = $request->getVal( 'rdfrom' );
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if ( $rdfrom ) {
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$url = $title->getFullURL( [ 'rdfrom' => $rdfrom ] );
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} else {
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$query = $request->getValues();
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unset( $query['title'] );
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$url = $title->getFullURL( $query );
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}
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// Check for a redirect loop
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if ( !preg_match( '/^' . preg_quote( $this->getConfig( MainConfigNames::Server ), '/' ) . '/', $url )
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&& $title->isLocal()
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) {
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// 301 so google et al report the target as the actual url.
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$output->redirect( $url, 301 );
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} else {
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$context->setTitle( SpecialPage::getTitleFor( 'Badtitle' ) );
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try {
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$this->parseTitle( $request );
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} catch ( MalformedTitleException $ex ) {
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throw new BadTitleError( $ex );
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}
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throw new BadTitleError();
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}
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// Handle any other redirects.
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// Redirect loops, titleless URL, $wgUsePathInfo URLs, and URLs with a variant
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} elseif ( !$this->tryNormaliseRedirect( $title ) ) {
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// Prevent information leak via Special:MyPage et al (T109724)
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$spFactory = $this->getServiceContainer()->getSpecialPageFactory();
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if ( $title->isSpecialPage() ) {
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$specialPage = $spFactory->getPage( $title->getDBkey() );
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if ( $specialPage instanceof RedirectSpecialPage ) {
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$specialPage->setContext( $context );
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if ( $this->getConfig( MainConfigNames::HideIdentifiableRedirects )
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&& $specialPage->personallyIdentifiableTarget()
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) {
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[ , $subpage ] = $spFactory->resolveAlias( $title->getDBkey() );
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$target = $specialPage->getRedirect( $subpage );
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// Target can also be true. We let that case fall through to normal processing.
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if ( $target instanceof Title ) {
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if ( $target->isExternal() ) {
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// Handle interwiki redirects
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$target = SpecialPage::getTitleFor(
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'GoToInterwiki',
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'force/' . $target->getPrefixedDBkey()
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);
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}
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$query = $specialPage->getRedirectQuery( $subpage ) ?: [];
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$derivateRequest = new DerivativeRequest( $request, $query );
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$derivateRequest->setRequestURL( $request->getRequestURL() );
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$context->setRequest( $derivateRequest );
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// Do not varnish cache these. May vary even for anons
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$output->lowerCdnMaxage( 0 );
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// NOTE: This also clears any action cache.
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// Action should not have been computed yet, but if it was,
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// we reset it because special pages only support "view".
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$context->setTitle( $target );
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$wgTitle = $target;
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$title = $target;
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$output->addJsConfigVars( [
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'wgInternalRedirectTargetUrl' => $target->getLinkURL( $query ),
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] );
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$output->addModules( 'mediawiki.action.view.redirect' );
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// If the title is invalid, redirect but show the correct bad title error - T297407
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if ( !$target->isValid() ) {
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try {
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$this->getServiceContainer()->getTitleParser()
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->parseTitle( $target->getPrefixedText() );
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} catch ( MalformedTitleException $ex ) {
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throw new BadTitleError( $ex );
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|
}
|
|
throw new BadTitleError();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Special pages ($title may have changed since if statement above)
|
|
if ( $title->isSpecialPage() ) {
|
|
// Actions that need to be made when we have a special pages
|
|
$spFactory->executePath( $title, $context );
|
|
} else {
|
|
// ...otherwise treat it as an article view. The article
|
|
// may still be a wikipage redirect to another article or URL.
|
|
$article = $this->initializeArticle();
|
|
if ( is_object( $article ) ) {
|
|
$this->performAction( $article, $requestTitle );
|
|
} elseif ( is_string( $article ) ) {
|
|
$output->redirect( $article );
|
|
} else {
|
|
throw new UnexpectedValueException( "Shouldn't happen: MediaWiki::initializeArticle()"
|
|
. " returned neither an object nor a URL" );
|
|
}
|
|
}
|
|
$output->considerCacheSettingsFinal();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Handle redirects for uncanonical title requests.
|
|
*
|
|
* Handles:
|
|
* - Redirect loops.
|
|
* - No title in URL.
|
|
* - $wgUsePathInfo URLs.
|
|
* - URLs with a variant.
|
|
* - Other non-standard URLs (as long as they have no extra query parameters).
|
|
*
|
|
* Behaviour:
|
|
* - Normalise title values:
|
|
* /wiki/Foo%20Bar -> /wiki/Foo_Bar
|
|
* - Normalise empty title:
|
|
* /wiki/ -> /wiki/Main
|
|
* /w/index.php?title= -> /wiki/Main
|
|
* - Don't redirect anything with query parameters other than 'title' or 'action=view'.
|
|
*
|
|
* @param Title $title
|
|
* @return bool True if a redirect was set.
|
|
* @throws HttpError
|
|
*/
|
|
protected function tryNormaliseRedirect( Title $title ): bool {
|
|
$request = $this->getRequest();
|
|
$output = $this->getOutput();
|
|
|
|
if ( $request->getRawVal( 'action', 'view' ) != 'view'
|
|
|| $request->wasPosted()
|
|
|| ( $request->getCheck( 'title' )
|
|
&& $title->getPrefixedDBkey() == $request->getText( 'title' ) )
|
|
|| count( $request->getValueNames( [ 'action', 'title' ] ) )
|
|
|| !$this->getHookRunner()->onTestCanonicalRedirect( $request, $title, $output )
|
|
) {
|
|
return false;
|
|
}
|
|
|
|
if ( $this->getConfig( MainConfigNames::MainPageIsDomainRoot ) && $request->getRequestURL() === '/' ) {
|
|
return false;
|
|
}
|
|
|
|
$services = $this->getServiceContainer();
|
|
|
|
if ( $title->isSpecialPage() ) {
|
|
[ $name, $subpage ] = $services->getSpecialPageFactory()
|
|
->resolveAlias( $title->getDBkey() );
|
|
|
|
if ( $name ) {
|
|
$title = SpecialPage::getTitleFor( $name, $subpage );
|
|
}
|
|
}
|
|
// Redirect to canonical url, make it a 301 to allow caching
|
|
$targetUrl = (string)$services->getUrlUtils()->expand( $title->getFullURL(), PROTO_CURRENT );
|
|
if ( $targetUrl == $request->getFullRequestURL() ) {
|
|
$message = "Redirect loop detected!\n\n" .
|
|
"This means the wiki got confused about what page was " .
|
|
"requested; this sometimes happens when moving a wiki " .
|
|
"to a new server or changing the server configuration.\n\n";
|
|
|
|
if ( $this->getConfig( MainConfigNames::UsePathInfo ) ) {
|
|
$message .= "The wiki is trying to interpret the page " .
|
|
"title from the URL path portion (PATH_INFO), which " .
|
|
"sometimes fails depending on the web server. Try " .
|
|
"setting \"\$wgUsePathInfo = false;\" in your " .
|
|
"LocalSettings.php, or check that \$wgArticlePath " .
|
|
"is correct.";
|
|
} else {
|
|
$message .= "Your web server was detected as possibly not " .
|
|
"supporting URL path components (PATH_INFO) correctly; " .
|
|
"check your LocalSettings.php for a customized " .
|
|
"\$wgArticlePath setting and/or toggle \$wgUsePathInfo " .
|
|
"to true.";
|
|
}
|
|
throw new HttpError( 500, $message );
|
|
}
|
|
$output->setCdnMaxage( 1200 );
|
|
$output->redirect( $targetUrl, '301' );
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Initialize the main Article object for "standard" actions (view, etc)
|
|
* Create an Article object for the page, following redirects if needed.
|
|
*
|
|
* @return Article|string An Article, or a string to redirect to another URL
|
|
*/
|
|
protected function initializeArticle() {
|
|
$context = $this->getContext();
|
|
|
|
$title = $context->getTitle();
|
|
$services = $this->getServiceContainer();
|
|
if ( $context->canUseWikiPage() ) {
|
|
// Optimization: Reuse the WikiPage instance from context, to avoid
|
|
// repeat fetching or computation of data already loaded.
|
|
$page = $context->getWikiPage();
|
|
} else {
|
|
// This case should not happen, but just in case.
|
|
// @TODO: remove this or use an exception
|
|
$page = $services->getWikiPageFactory()->newFromTitle( $title );
|
|
$context->setWikiPage( $page );
|
|
wfWarn( "RequestContext::canUseWikiPage() returned false" );
|
|
}
|
|
|
|
// Make GUI wrapper for the WikiPage
|
|
$article = Article::newFromWikiPage( $page, $context );
|
|
|
|
// Skip some unnecessary code if the content model doesn't support redirects
|
|
// Use the page content model rather than invoking Title::getContentModel()
|
|
// to avoid querying page data twice (T206498)
|
|
if ( !$page->getContentHandler()->supportsRedirects() ) {
|
|
return $article;
|
|
}
|
|
|
|
$request = $context->getRequest();
|
|
|
|
// Namespace might change when using redirects
|
|
// Check for redirects ...
|
|
$action = $request->getRawVal( 'action', 'view' );
|
|
$file = ( $page instanceof WikiFilePage ) ? $page->getFile() : null;
|
|
if ( ( $action == 'view' || $action == 'render' ) // ... for actions that show content
|
|
&& !$request->getCheck( 'oldid' ) // ... and are not old revisions
|
|
&& !$request->getCheck( 'diff' ) // ... and not when showing diff
|
|
&& $request->getRawVal( 'redirect' ) !== 'no' // ... unless explicitly told not to
|
|
// ... and the article is not a non-redirect image page with associated file
|
|
&& !( is_object( $file ) && $file->exists() && !$file->getRedirected() )
|
|
) {
|
|
// Give extensions a change to ignore/handle redirects as needed
|
|
$ignoreRedirect = $target = false;
|
|
|
|
$this->getHookRunner()->onInitializeArticleMaybeRedirect( $title, $request,
|
|
// @phan-suppress-next-line PhanTypeMismatchArgument Type mismatch on pass-by-ref args
|
|
$ignoreRedirect, $target, $article );
|
|
$page = $article->getPage(); // reflect any hook changes
|
|
|
|
// Follow redirects only for... redirects.
|
|
// If $target is set, then a hook wanted to redirect.
|
|
if ( !$ignoreRedirect && ( $target || $page->isRedirect() ) ) {
|
|
// Is the target already set by an extension?
|
|
$target = $target ?: $page->followRedirect();
|
|
if ( is_string( $target ) && !$this->getConfig( MainConfigNames::DisableHardRedirects ) ) {
|
|
// we'll need to redirect
|
|
return $target;
|
|
}
|
|
if ( is_object( $target ) ) {
|
|
// Rewrite environment to redirected article
|
|
$rpage = $services->getWikiPageFactory()->newFromTitle( $target );
|
|
$rpage->loadPageData();
|
|
if ( $rpage->exists() || ( is_object( $file ) && !$file->isLocal() ) ) {
|
|
$rarticle = Article::newFromWikiPage( $rpage, $context );
|
|
$rarticle->setRedirectedFrom( $title );
|
|
|
|
$article = $rarticle;
|
|
// NOTE: This also clears any action cache
|
|
$context->setTitle( $target );
|
|
$context->setWikiPage( $article->getPage() );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return $article;
|
|
}
|
|
|
|
/**
|
|
* Perform one of the "standard" actions
|
|
*
|
|
* @param Article $article
|
|
* @param Title $requestTitle The original title, before any redirects were applied
|
|
*/
|
|
protected function performAction( Article $article, Title $requestTitle ) {
|
|
$request = $this->getRequest();
|
|
$output = $this->getOutput();
|
|
$title = $this->getTitle();
|
|
$user = $this->getUser();
|
|
|
|
if ( !$this->getHookRunner()->onMediaWikiPerformAction(
|
|
$output, $article, $title, $user, $request, $this )
|
|
) {
|
|
return;
|
|
}
|
|
|
|
$t = microtime( true );
|
|
$actionName = $this->getAction();
|
|
$services = $this->getServiceContainer();
|
|
|
|
$action = $services->getActionFactory()->getAction( $actionName, $article, $this->getContext() );
|
|
if ( $action instanceof Action ) {
|
|
ProfilingContext::singleton()->init( MW_ENTRY_POINT, $actionName );
|
|
|
|
// Check read permissions
|
|
if ( $action->needsReadRights() && !$user->isAllowed( 'read' ) ) {
|
|
throw new PermissionsError( 'read' );
|
|
}
|
|
|
|
// Narrow DB query expectations for this HTTP request
|
|
if ( $request->wasPosted() && !$action->doesWrites() ) {
|
|
$trxProfiler = Profiler::instance()->getTransactionProfiler();
|
|
$trxLimits = $this->getConfig( MainConfigNames::TrxProfilerLimits );
|
|
$trxProfiler->setExpectations( $trxLimits['POST-nonwrite'], __METHOD__ );
|
|
}
|
|
|
|
// Let CDN cache things if we can purge them.
|
|
// Also unconditionally cache page views.
|
|
if ( $this->getConfig( MainConfigNames::UseCdn ) ) {
|
|
$htmlCacheUpdater = $services->getHtmlCacheUpdater();
|
|
if ( $request->matchURLForCDN( $htmlCacheUpdater->getUrls( $requestTitle ) ) ) {
|
|
$output->setCdnMaxage( $this->getConfig( MainConfigNames::CdnMaxAge ) );
|
|
} elseif ( $action instanceof ViewAction ) {
|
|
$output->setCdnMaxage( 3600 );
|
|
}
|
|
}
|
|
|
|
$action->show();
|
|
|
|
$runTime = microtime( true ) - $t;
|
|
|
|
$statAction = strtr( $actionName, '.', '_' );
|
|
$services->getStatsFactory()->getTiming( 'action_executeTiming_seconds' )
|
|
->setLabel( 'action', $statAction )
|
|
->copyToStatsdAt( 'action.' . $statAction . '.executeTiming' )
|
|
->observe( 1000 * $runTime );
|
|
|
|
return;
|
|
}
|
|
|
|
// If we've not found out which action it is by now, it's unknown
|
|
$output->setStatusCode( 404 );
|
|
$output->showErrorPage( 'nosuchaction', 'nosuchactiontext' );
|
|
}
|
|
}
|