- // Special pages
- } elseif ( NS_SPECIAL == $title->getNamespace() ) {
- // Actions that need to be made when we have a special pages
- SpecialPageFactory::executePath( $title, $this->context );
- } else {
- // ...otherwise treat it as an article view. The article
- // may be a redirect to another article or URL.
- $article = $this->initializeArticle();
- if ( is_object( $article ) ) {
- $this->performAction( $article, $requestTitle );
- } elseif ( is_string( $article ) ) {
- $output->redirect( $article );
+ }
+ }
+
+ /**
+ * 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
+ * - Normalise non-standard title urls:
+ * /w/index.php?title=Foo_Bar -> /wiki/Foo_Bar
+ * - Don't redirect anything with query parameters other than 'title' or 'action=view'.
+ *
+ * @return bool True if a redirect was set.
+ */
+ private function tryNormaliseRedirect( $title ) {
+ $request = $this->context->getRequest();
+ $output = $this->context->getOutput();
+
+ if ( $request->getVal( 'action', 'view' ) != 'view'
+ || $request->wasPosted()
+ || count( $request->getValueNames( array( 'action', 'title' ) ) )
+ || !Hooks::run( 'TestCanonicalRedirect', array( $request, $title, $output ) )
+ ) {
+ return false;
+ }
+
+ if ( $title->isSpecialPage() ) {
+ list( $name, $subpage ) = SpecialPageFactory::resolveAlias( $title->getDBkey() );
+ if ( $name ) {
+ $title = SpecialPage::getTitleFor( $name, $subpage );
+ }
+ }
+ // Redirect to canonical url, make it a 301 to allow caching
+ $targetUrl = wfExpandUrl( $title->getFullURL(), PROTO_CURRENT );
+
+ if ( $targetUrl != $request->getFullRequestURL() ) {
+ $output->setSquidMaxage( 1200 );
+ $output->redirect( $targetUrl, '301' );
+ return true;
+ }
+
+ // If there is no title, or the title is in a non-standard encoding, we demand
+ // a redirect. If cgi somehow changed the 'title' query to be non-standard while
+ // the url is standard, the server is misconfigured.
+ if ( $request->getVal( 'title' ) === null
+ || $title->getPrefixedDBkey() != $request->getVal( 'title' )
+ ) {
+ $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->config->get( '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.";