Support for file uploads

Author: igorw

src/Igorw/CgiHttpKernel/CgiHttpKernel.php

@@ -6,6 +6,8 @@
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpFoundation\ParameterBag;
 use Symfony\Component\HttpFoundation\Cookie;
+use Symfony\Component\HttpFoundation\FileBag;
+use Symfony\Component\HttpFoundation\File\UploadedFile;
 use Symfony\Component\HttpKernel\HttpKernelInterface;
 use Symfony\Component\Process\ProcessBuilder;
 
@@ -28,12 +30,19 @@ public function handle(Request $request, $type = HttpKernelInterface::MASTER_REQ
             return new Response('The requested file could not be found.', 404);
         }
 
-        $requestBody = $request->getContent() ?: $this->getUrlEncodedParameterBag($request->request);
+        $requestBody = $this->getRequestBody($request);
+
+        if (count($request->files)) {
+            $boundary = $this->getMimeBoundary();
+            $request->headers->set('Content-Type', 'multipart/form-data; boundary='.$boundary);
+            $requestBody = $this->encodeMultipartFiles($boundary, $request->files);
+        }
 
         $builder = ProcessBuilder::create()
             ->add('php-cgi')
             ->add('-d expose_php=Off')
             ->add('-d cgi.force_redirect=Off')
+            ->add('-d html_errors=Off')
             ->add($filename)
             ->setInput($requestBody)
             ->setEnv('SCRIPT_NAME', '/'.$filename)
@@ -72,6 +81,11 @@ public function handle(Request $request, $type = HttpKernelInterface::MASTER_REQ
         return $response;
     }
 
+    private function getRequestBody(Request $request)
+    {
+        return $request->getContent() ?: $this->getUrlEncodedParameterBag($request->request);
+    }
+
     private function getStatusCode(array $headers)
     {
         if (isset($headers['Status'])) {
@@ -144,4 +158,42 @@ private function getUrlEncodedParameterBag(ParameterBag $bag)
     {
         return http_build_query($bag->all());
     }
+
+    private function encodeMultipartFiles($boundary, FileBag $files)
+    {
+        $mimeBoundary = '--'.$boundary."\r\n";
+
+        $data = '';
+        foreach ($files->all() as $name => $file) {
+            $data .= $mimeBoundary;
+            $data .= $this->encodeMultipartFile($name, $file);
+            $data .= $mimeBoundary;
+        }
+        $data .= "\r\n";
+
+        return $data;
+    }
+
+    private function encodeMultipartFile($name, UploadedFile $file)
+    {
+        $eol = "\r\n";
+
+        $content = file_get_contents($file);
+
+        $data = '';
+        $data .= sprintf('Content-Disposition: form-data; name="%s"; filename="%s"'.$eol,
+                         $name,
+                         $file->getClientOriginalName());
+        $data .= sprintf('Content-Type: %s'.$eol,
+                         $file->getClientMimeType());
+        $data .= 'Content-Transfer-Encoding: base64'.$eol.$eol;
+        $data .= chunk_split(base64_encode($content)).$eol;
+
+        return $data;
+    }
+
+    private function getMimeBoundary()
+    {
+        return md5('cgi-http-kernel');
+    }
 }

tests/Igorw/CgiHttpKernel/CgiHttpKernelTest.php

@@ -3,6 +3,7 @@
 namespace Igorw\CgiHttpKernel;
 
 use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\File\UploadedFile;
 
 class CgiHttpKernelTest extends \PHPUnit_Framework_TestCase
 {
@@ -211,4 +212,22 @@ public function scriptNameShouldBeFrontControllerWithCustomFrontController()
 
         $this->assertSame('/silex.php', $response->getContent());
     }
+
+    /** @test */
+    public function uploadShouldPutFileInFiles()
+    {
+        $file = new UploadedFile(__DIR__.'/Fixtures/sadkitten.gif', 'sadkitten.gif', 'image/gif');
+
+        $request = Request::create('/upload.php', 'POST');
+        $request->files->add(array('kitten' => $file));
+        $response = $this->kernel->handle($request);
+
+        $expected = implode("\n", array(
+            'sadkitten.gif',
+            'image/gif',
+            '1304444',
+            '1',
+        ));
+        $this->assertSame($expected."\n", $response->getContent());
+    }
 }

tests/Igorw/CgiHttpKernel/Fixtures/sadkitten.gif

@@ -0,0 +1,6 @@
+<?php
+
+echo $_FILES['kitten']['name']."\n";
+echo $_FILES['kitten']['type']."\n";
+echo $_FILES['kitten']['size']."\n";
+echo file_exists($_FILES['kitten']['tmp_name'])."\n";