From 5bea2e703822b46c2b0872535eb5e1b8974a6fd2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ste=CC=81phane=20Goetz?= <onigoetz@onigoetz.ch>
Date: Tue, 28 Jul 2015 22:52:47 +0200
Subject: [PATCH] Do not write file uploads to files, keep in memory

---
 src/MultipartParser.php       | 20 +++++++++++++++-----
 tests/MultipartParserTest.php |  9 ++++++---
 2 files changed, 21 insertions(+), 8 deletions(-)

diff --git a/src/MultipartParser.php b/src/MultipartParser.php
index 681bf231..d4c0f4b9 100644
--- a/src/MultipartParser.php
+++ b/src/MultipartParser.php
@@ -142,17 +142,27 @@ protected function file($string)
         $content = preg_replace('/Content-Type: (.*)[^\n\r]/', '', $match[3]);
         $content = ltrim($content, "\r\n");
 
-        $path = tempnam(sys_get_temp_dir(), "php");
-        $err = file_put_contents($path, $content);
+        // Put content in a stream
+        $stream = fopen('php://memory', 'r+');
+        if ($content !== '') {
+            fwrite($stream, $content);
+            fseek($stream, 0);
+        }
 
         $data = [
             'name' => $match[2],
             'type' => trim($mime[1]),
-            'tmp_name' => $path,
-            'error' => ($err === false) ? UPLOAD_ERR_NO_FILE : UPLOAD_ERR_OK,
-            'size' => filesize($path),
+            'stream' => $stream, // Instead of writing to a file, we write to a stream.
+            'error' => UPLOAD_ERR_OK,
+            'size' => function_exists('mb_strlen')? mb_strlen($content, '8bit') : strlen($content),
         ];
 
+        //TODO :: have an option to write to files to emulate the same functionality as a real php server
+        //$path = tempnam(sys_get_temp_dir(), "php");
+        //$err = file_put_contents($path, $content);
+        //$data['tmp_name'] = $path;
+        //$data['error'] = ($err === false) ? UPLOAD_ERR_NO_FILE : UPLOAD_ERR_OK;
+
         $this->addResolved('files', $match[1], $data);
     }
 
diff --git a/tests/MultipartParserTest.php b/tests/MultipartParserTest.php
index 0bffd5c3..39a02c71 100644
--- a/tests/MultipartParserTest.php
+++ b/tests/MultipartParserTest.php
@@ -83,13 +83,16 @@ public function testFileUpload() {
 
         $uploaded_blank = $parser->getFiles()['files'][0];
 
-        $this->assertEquals($file, file_get_contents($uploaded_blank['tmp_name']));
+        // The original test was `file_get_contents($uploaded_blank['tmp_name'])`
+        // but as we moved to resources, we can't use that anymore, this is the only
+        // difference with a stock php implementation
+        $this->assertEquals($file, stream_get_contents($uploaded_blank['stream']));
 
-        $uploaded_blank['tmp_name'] = 'file'; //override the filename as it is random
+        $uploaded_blank['stream'] = 'file'; //override the resource as it is random
         $expected_file = [
             'name' => 'blank.gif',
             'type' => 'image/gif',
-            'tmp_name' => 'file',
+            'stream' => 'file',
             'error' => 0,
             'size' => 43,
         ];