bug #62459 [Routing] Fix case sensitivity for static host matching in compiled routes (yoeunes)

This PR was merged into the 6.4 branch.

Discussion
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[Routing] Fix case sensitivity for static host matching in compiled routes

| Q             | A
| ------------- | ---
| Branch?       | 6.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Issues        | -
| License       | MIT

`CompiledUrlMatcher` uses string comparison for static hosts, but checks lowercased request host against the original route host. This fails if the route host has uppercase letters (e.g., `'api.example.com' !== 'API.example.com'`), throwing `ResourceNotFoundException`.

`UrlMatcher` avoids this via case-insensitive regex.

This PR lowercases static hosts in `CompiledUrlMatcherDumper` for consistency.

Commits
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9c33b1fdb6b [Routing] Fix case sensitivity for static host matching in compiled routes

Author: nicolas-grekas

Matcher/Dumper/CompiledUrlMatcherDumper.php

@@ -222,7 +222,12 @@ private function compileStaticRoutes(array $staticRoutes, array &$conditions): a
         foreach ($staticRoutes as $url => $routes) {
             $compiledRoutes[$url] = [];
             foreach ($routes as $name => [$route, $hasTrailingSlash]) {
-                $compiledRoutes[$url][] = $this->compileRoute($route, $name, (!$route->compile()->getHostVariables() ? $route->getHost() : $route->compile()->getHostRegex()) ?: null, $hasTrailingSlash, false, $conditions);
+                if ($route->compile()->getHostVariables()) {
+                    $host = $route->compile()->getHostRegex();
+                } elseif ($host = $route->getHost()) {
+                    $host = strtolower($host);
+                }
+                $compiledRoutes[$url][] = $this->compileRoute($route, $name, $host ?: null, $hasTrailingSlash, false, $conditions);
             }
         }
 

Tests/Matcher/CompiledUrlMatcherTest.php

@@ -13,11 +13,33 @@
 
 use Symfony\Component\Routing\Matcher\CompiledUrlMatcher;
 use Symfony\Component\Routing\Matcher\Dumper\CompiledUrlMatcherDumper;
+use Symfony\Component\Routing\Matcher\UrlMatcher;
 use Symfony\Component\Routing\RequestContext;
+use Symfony\Component\Routing\Route;
 use Symfony\Component\Routing\RouteCollection;
 
 class CompiledUrlMatcherTest extends UrlMatcherTest
 {
+    public function testStaticHostIsCaseInsensitive()
+    {
+        $collection = new RouteCollection();
+        $collection->add('static_host_route', new Route('/test', [], [], [], 'API.example.com'));
+
+        $context = new RequestContext('/test', 'GET', 'api.example.com');
+        $matcher = new UrlMatcher($collection, $context);
+
+        $result = $matcher->match('/test');
+        $this->assertEquals('static_host_route', $result['_route'], 'UrlMatcher should match case-insensitive host');
+
+        $dumper = new CompiledUrlMatcherDumper($collection);
+        $compiledRoutes = $dumper->getCompiledRoutes();
+
+        $compiledMatcher = new CompiledUrlMatcher($compiledRoutes, $context);
+
+        $result = $compiledMatcher->match('/test');
+        $this->assertEquals('static_host_route', $result['_route'], 'CompiledUrlMatcher should match case-insensitive host');
+    }
+
     protected function getUrlMatcher(RouteCollection $routes, ?RequestContext $context = null)
     {
         $dumper = new CompiledUrlMatcherDumper($routes);