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<?php
declare(strict_types=1);
/*
* This file is part of Contao.
*
* (c) Leo Feyer
*
* @license LGPL-3.0-or-later
*/
namespace Contao\CoreBundle\Routing;
use Contao\CoreBundle\ContaoCoreBundle;
use Contao\CoreBundle\Exception\NoRootPageFoundException;
use Contao\CoreBundle\Framework\ContaoFramework;
use Contao\CoreBundle\Routing\Page\PageRegistry;
use Contao\CoreBundle\Routing\Page\PageRoute;
use Contao\CoreBundle\Util\LocaleUtil;
use Contao\PageModel;
use Symfony\Bundle\FrameworkBundle\Controller\RedirectController;
use Symfony\Cmf\Component\Routing\Candidates\CandidatesInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Routing\Exception\RouteNotFoundException;
use Symfony\Component\Routing\Route;
use Symfony\Component\Routing\RouteCollection;
class Route404Provider extends AbstractPageRouteProvider
{
/**
* @var PageRegistry
*/
private $pageRegistry;
/**
* @internal Do not inherit from this class; decorate the "contao.routing.route_404_provider" service instead
*/
public function __construct(ContaoFramework $framework, CandidatesInterface $candidates, PageRegistry $pageRegistry)
{
parent::__construct($framework, $candidates);
$this->pageRegistry = $pageRegistry;
}
public function getRouteCollectionForRequest(Request $request): RouteCollection
{
$this->framework->initialize(true);
$collection = new RouteCollection();
$routes = array_merge(
$this->getNotFoundRoutes(),
$this->getLocaleFallbackRoutes($request)
);
$this->sortRoutes($routes, $request->getLanguages());
foreach ($routes as $name => $route) {
$collection->add($name, $route);
}
return $collection;
}
public function getRouteByName($name): Route
{
$this->framework->initialize(true);
$ids = $this->getPageIdsFromNames([$name]);
if (empty($ids)) {
throw new RouteNotFoundException('Route name does not match a page ID');
}
/** @var PageModel $pageModel */
$pageModel = $this->framework->getAdapter(PageModel::class);
$page = $pageModel->findByPk($ids[0]);
if (null === $page) {
throw new RouteNotFoundException(sprintf('Page ID "%s" not found', $ids[0]));
}
$routes = [];
$this->addNotFoundRoutesForPage($page, $routes);
$this->addLocaleRedirectRoute($this->pageRegistry->getRoute($page), null, $routes);
if (!\array_key_exists($name, $routes)) {
throw new RouteNotFoundException('Route "'.$name.'" not found');
}
return $routes[$name];
}
public function getRoutesByNames($names): array
{
$this->framework->initialize(true);
/** @var PageModel $pageAdapter */
$pageAdapter = $this->framework->getAdapter(PageModel::class);
if (null === $names) {
$pages = $pageAdapter->findAll();
} else {
$ids = $this->getPageIdsFromNames($names);
if (empty($ids)) {
return [];
}
$pages = $pageAdapter->findBy('tl_page.id IN ('.implode(',', $ids).')', []);
}
$routes = [];
foreach ($pages as $page) {
$this->addNotFoundRoutesForPage($page, $routes);
$this->addLocaleRedirectRoute($this->pageRegistry->getRoute($page), null, $routes);
}
$this->sortRoutes($routes);
return $routes;
}
private function getNotFoundRoutes(): array
{
$this->framework->initialize(true);
/** @var PageModel $pageModel */
$pageModel = $this->framework->getAdapter(PageModel::class);
$pages = $pageModel->findByType('error_404');
if (null === $pages) {
return [];
}
$routes = [];
foreach ($pages as $page) {
$this->addNotFoundRoutesForPage($page, $routes);
}
return $routes;
}
private function addNotFoundRoutesForPage(PageModel $page, array &$routes): void
{
if ('error_404' !== $page->type) {
return;
}
try {
$page->loadDetails();
if (!$page->rootId) {
return;
}
} catch (NoRootPageFoundException $e) {
return;
}
$defaults = [
'_token_check' => true,
'_controller' => 'Contao\FrontendIndex::renderPage',
'_scope' => ContaoCoreBundle::SCOPE_FRONTEND,
'_locale' => LocaleUtil::formatAsLocale($page->rootLanguage),
'_format' => 'html',
'_canonical_route' => 'tl_page.'.$page->id,
'pageModel' => $page,
];
$requirements = ['_url_fragment' => '.*'];
$path = '/{_url_fragment}';
$routes['tl_page.'.$page->id.'.error_404'] = new Route(
$path,
$defaults,
$requirements,
['utf8' => true],
$page->domain,
$page->rootUseSSL ? 'https' : 'http'
);
if (!$page->urlPrefix) {
return;
}
$path = '/'.$page->urlPrefix.$path;
$routes['tl_page.'.$page->id.'.error_404.locale'] = new Route(
$path,
$defaults,
$requirements,
['utf8' => true],
$page->domain,
$page->rootUseSSL ? 'https' : 'http'
);
}
private function getLocaleFallbackRoutes(Request $request): array
{
if ('/' === $request->getPathInfo()) {
return [];
}
$routes = [];
foreach ($this->findCandidatePages($request) as $page) {
$this->addLocaleRedirectRoute($this->pageRegistry->getRoute($page), $request, $routes);
}
return $routes;
}
private function addLocaleRedirectRoute(PageRoute $route, ?Request $request, array &$routes): void
{
$length = \strlen($route->getUrlPrefix());
if (0 === $length) {
return;
}
$redirect = new Route(
substr($route->getPath(), $length + 1),
$route->getDefaults(),
$route->getRequirements(),
$route->getOptions(),
$route->getHost(),
$route->getSchemes(),
$route->getMethods()
);
$path = $route->getPath();
if (null !== $request) {
$path = '/'.$route->getUrlPrefix().$request->getPathInfo();
}
$redirect->addDefaults([
'_controller' => RedirectController::class,
'path' => $path,
'permanent' => false,
]);
$routes['tl_page.'.$route->getPageModel()->id.'.locale'] = $redirect;
}
/**
* Sorts routes so that the FinalMatcher will correctly resolve them.
*
* 1. Sort locale-aware routes first, so e.g. /de/not-found.html renders the german error page
* 2. Then sort by hostname, so the ones with empty host are only taken if no hostname matches
* 3. Lastly pages must be sorted by accept language and fallback, so the best language matches first
*/
private function sortRoutes(array &$routes, array $languages = null): void
{
// Convert languages array so key is language and value is priority
if (null !== $languages) {
$languages = $this->convertLanguagesForSorting($languages);
}
uasort(
$routes,
function (Route $a, Route $b) use ($languages, $routes) {
$errorA = false !== strpos('.error_404', array_search($a, $routes, true));
$errorB = false !== strpos('.error_404', array_search($a, $routes, true), -7);
$localeA = '.locale' === substr(array_search($a, $routes, true), -7);
$localeB = '.locale' === substr(array_search($b, $routes, true), -7);
if ($errorA && !$errorB) {
return 1;
}
if ($errorB && !$errorA) {
return -1;
}
if ($localeA && !$localeB) {
return -1;
}
if ($localeB && !$localeA) {
return 1;
}
return $this->compareRoutes($a, $b, $languages);
}
);
}
}

vendor/contao/core-bundle/src/Routing/Route404Provider.php line 53