[Form] Add a form error if post_max_size has been reached.

src/Symfony/Component/Form/Extension/HttpFoundation/HttpFoundationRequestHandler.php

@@ -12,6 +12,8 @@
 namespace Symfony\Component\Form\Extension\HttpFoundation;
 
 use Symfony\Component\Form\Exception\UnexpectedTypeException;
+use Symfony\Component\Form\Extension\Validator\Util\ServerParams;
+use Symfony\Component\Form\FormError;
 use Symfony\Component\Form\FormInterface;
 use Symfony\Component\Form\RequestHandlerInterface;
 use Symfony\Component\HttpFoundation\Request;
@@ -24,6 +26,19 @@ use Symfony\Component\HttpFoundation\Request;
  */
 class HttpFoundationRequestHandler implements RequestHandlerInterface
 {
+    /**
+     * @var ServerParams
+     */
+    private $serverParams;
+
+    /**
+     * {@inheritdoc}
+     */
+    public function __construct(ServerParams $params = null)
+    {
+        $this->serverParams = $params ?: new ServerParams();
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -61,6 +76,10 @@ class HttpFoundationRequestHandler implements RequestHandlerInterface
                 $params = $request->request->get($name, $default);
                 $files = $request->files->get($name, $default);
             } else {
+                if ($this->serverParams->getContentLength() > $this->serverParams->getPostMaxSize()) {
+                    $form->addError(new FormError('Max post size exceeded.'));
+                }
+
                 // Don't submit the form if it is not present in the request
                 return;
             }

src/Symfony/Component/Form/NativeRequestHandler.php

@@ -12,6 +12,7 @@
 namespace Symfony\Component\Form;
 
 use Symfony\Component\Form\Exception\UnexpectedTypeException;
+use Symfony\Component\Form\Extension\Validator\Util\ServerParams;
 
 /**
  * A request handler using PHP's super globals $_GET, $_POST and $_SERVER.
@@ -20,6 +21,19 @@ use Symfony\Component\Form\Exception\UnexpectedTypeException;
  */
 class NativeRequestHandler implements RequestHandlerInterface
 {
+    /**
+     * @var ServerParams
+     */
+    private $serverParams;
+
+    /**
+     * {@inheritdoc}
+     */
+    public function __construct(ServerParams $params = null)
+    {
+        $this->serverParams = $params ?: new ServerParams();
+    }
+
     /**
      * The allowed keys of the $_FILES array.
      *
@@ -75,6 +89,10 @@ class NativeRequestHandler implements RequestHandlerInterface
                 $params = array_key_exists($name, $_POST) ? $_POST[$name] : $default;
                 $files = array_key_exists($name, $fixedFiles) ? $fixedFiles[$name] : $default;
             } else {
+                if ($this->serverParams->getContentLength() > $this->serverParams->getPostMaxSize()) {
+                    $form->addError(new FormError('Max post size exceeded.'));
+                }
+
                 // Don't submit the form if it is not present in the request
                 return;
             }

src/Symfony/Component/Form/Tests/AbstractRequestHandlerTest.php

@@ -11,6 +11,8 @@
 
 namespace Symfony\Component\Form\Tests;
 
+use Symfony\Component\Form\Forms;
+
 /**
  * @author Bernhard Schussek <bschussek@gmail.com>
  */
@@ -21,11 +23,17 @@ abstract class AbstractRequestHandlerTest extends \PHPUnit_Framework_TestCase
      */
     protected $requestHandler;
 
+    /**
+     * @var \Symfony\Component\Form\FormFactory
+     */
+    protected $factory;
+
     protected $request;
 
     protected function setUp()
     {
         $this->requestHandler = $this->getRequestHandler();
+        $this->factory = Forms::createFormFactoryBuilder()->getFormFactory();
         $this->request = null;
     }
 
@@ -249,6 +257,19 @@ abstract class AbstractRequestHandlerTest extends \PHPUnit_Framework_TestCase
         $this->requestHandler->handleRequest($form, $this->request);
     }
 
+    public function testAddFormErrorIfPostMaxSizeExceeded()
+    {
+        $form = $this->factory->createNamed('name', 'text');
+        $this->setRequestData('POST', array(), array());
+        $_SERVER['CONTENT_LENGTH'] = 1000000000;
+
+        $this->requestHandler->handleRequest($form, $this->request);
+
+        $this->assertEquals("ERROR: Max post size exceeded.\n", $form->getErrorsAsString());
+
+        unset($_SERVER['CONTENT_LENGTH']);
+    }
+
     abstract protected function setRequestData($method, $data, $files = array());
 
     abstract protected function getRequestHandler();