feature #35284 Simplify UriSigner when working with HttpFoundation's Request (Toflar)

This PR was squashed before being merged into the 5.1-dev branch (closes #35284).

Discussion
----------

Simplify UriSigner when working with HttpFoundation's Request

| Q             | A
| ------------- | ---
| Branch?       | master
| Bug fix?      | no
| New feature?  | yes
| Deprecations? | no
| Tickets       |
| License       | MIT
| Doc PR        |

I'm using the `UriSigner` in my own projects from time to time and I've always wondered why I have to manually generate the URI from the `Request` instance in such a way that it is correctly validated.
Let's add a new `checkRequest(Request $request)` method to provide better DX.

Commits
-------

4887b4bee1 Simplify UriSigner when working with HttpFoundation's Request

src/Symfony/Component/HttpKernel/EventListener/FragmentListener.php

@@ -83,8 +83,7 @@ class FragmentListener implements EventSubscriberInterface
         }
 
         // is the Request signed?
-        // we cannot use $request->getUri() here as we want to work with the original URI (no query string reordering)
+        if ($this->signer->checkRequest($request)) {
-        if ($this->signer->check($request->getSchemeAndHttpHost().$request->getBaseUrl().$request->getPathInfo().(null !== ($qs = $request->server->get('QUERY_STRING')) ? '?'.$qs : ''))) {
             return;
         }
 

src/Symfony/Component/HttpKernel/Tests/UriSignerTest.php

@@ -12,6 +12,7 @@
 namespace Symfony\Component\HttpKernel\Tests;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpKernel\UriSigner;
 
 class UriSignerTest extends TestCase
@@ -52,6 +53,15 @@ class UriSignerTest extends TestCase
         $this->assertTrue($signer->check($signer->sign('http://example.com/foo?foo=bar&baz=bay')));
     }
 
+    public function testCheckWithRequest()
+    {
+        $signer = new UriSigner('foobar');
+
+        $this->assertTrue($signer->checkRequest(Request::create($signer->sign('http://example.com/foo'))));
+        $this->assertTrue($signer->checkRequest(Request::create($signer->sign('http://example.com/foo?foo=bar'))));
+        $this->assertTrue($signer->checkRequest(Request::create($signer->sign('http://example.com/foo?foo=bar&0=integer'))));
+    }
+
     public function testCheckWithDifferentParameter()
     {
         $signer = new UriSigner('foobar', 'qux');

src/Symfony/Component/HttpKernel/UriSigner.php

@@ -11,6 +11,8 @@
 
 namespace Symfony\Component\HttpKernel;
 
+use Symfony\Component\HttpFoundation\Request;
+
 /**
  * Signs URIs.
  *
@@ -78,6 +80,14 @@ class UriSigner
         return hash_equals($this->computeHash($this->buildUrl($url, $params)), $hash);
     }
 
+    public function checkRequest(Request $request): bool
+    {
+        $qs = ($qs = $request->server->get('QUERY_STRING')) ? '?'.$qs : '';
+
+        // we cannot use $request->getUri() here as we want to work with the original URI (no query string reordering)
+        return $this->check($request->getSchemeAndHttpHost().$request->getBaseUrl().$request->getPathInfo().$qs);
+    }
+
     private function computeHash(string $uri): string
     {
         return base64_encode(hash_hmac('sha256', $uri, $this->secret, true));