Fix request schem

As mentionned in #396, the request scheme was not as documented,
returning SERVER_PROTOCOL instead.

The `getScheme` function is now used to handle common cases (HTTPS,
FORWATED_PROTO, ...).

`request->secure` is also based on the scheme now as `$_SERVER['HTTPS']`
is unreliable for this purpose.

flight/net/Request.php

@@ -135,7 +135,7 @@ class Request {
                 'referrer' => self::getVar('HTTP_REFERER'),
                 'ip' => self::getVar('REMOTE_ADDR'),
                 'ajax' => self::getVar('HTTP_X_REQUESTED_WITH') == 'XMLHttpRequest',
-                'scheme' => self::getVar('SERVER_PROTOCOL', 'HTTP/1.1'),
+                'scheme' => self::getScheme(),
                 'user_agent' => self::getVar('HTTP_USER_AGENT'),
                 'type' => self::getVar('CONTENT_TYPE'),
                 'length' => self::getVar('CONTENT_LENGTH', 0),
@@ -143,7 +143,7 @@ class Request {
                 'data' => new Collection($_POST),
                 'cookies' => new Collection($_COOKIE),
                 'files' => new Collection($_FILES),
-                'secure' => self::getVar('HTTPS', 'off') != 'off',
+                'secure' => self::getScheme() == 'https',
                 'accept' => self::getVar('HTTP_ACCEPT'),
                 'proxy_ip' => self::getProxyIpAddress()
             );
@@ -286,4 +286,19 @@ class Request {
 
         return $params;
     }
+
+    public static function getScheme() {
+        if (
+            (isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) === 'on')
+            ||
+            (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https')
+            ||
+            (isset($_SERVER['HTTP_FRONT_END_HTTPS']) && $_SERVER['HTTP_FRONT_END_HTTPS'] === 'on')
+            ||
+            (isset($_SERVER['REQUEST_SCHEME']) && $_SERVER['REQUEST_SCHEME'] === 'https')
+        ) {
+            return 'https';
+        }
+        return 'http';
+    }
 }

tests/RequestTest.php

@@ -22,7 +22,6 @@ class RequestTest extends PHPUnit_Framework_TestCase
         $_SERVER['REQUEST_METHOD'] = 'GET';
         $_SERVER['HTTP_X_REQUESTED_WITH'] = 'XMLHttpRequest';
         $_SERVER['REMOTE_ADDR'] = '8.8.8.8';
-        $_SERVER['HTTPS'] = 'on';
         $_SERVER['HTTP_X_FORWARDED_FOR'] = '32.32.32.32';
 
         $this->request = new \flight\net\Request();
@@ -34,10 +33,10 @@ class RequestTest extends PHPUnit_Framework_TestCase
         $this->assertEquals('GET', $this->request->method);
         $this->assertEquals('', $this->request->referrer);
         $this->assertEquals(true, $this->request->ajax);
-        $this->assertEquals('HTTP/1.1', $this->request->scheme);
+        $this->assertEquals('http', $this->request->scheme);
         $this->assertEquals('', $this->request->type);
         $this->assertEquals(0, $this->request->length);
-        $this->assertEquals(true, $this->request->secure);
+        $this->assertEquals(false, $this->request->secure);
         $this->assertEquals('', $this->request->accept);
     }
 
@@ -96,4 +95,34 @@ class RequestTest extends PHPUnit_Framework_TestCase
 
         $this->assertEquals('PUT', $request->method);
     }
+
+    function testHttps() {
+        $_SERVER['HTTPS'] = 'on';
+        $request = new \flight\net\Request();
+        $this->assertEquals('https', $request->scheme);
+        $_SERVER['HTTPS'] = 'off';
+        $request = new \flight\net\Request();
+        $this->assertEquals('http', $request->scheme);
+
+        $_SERVER['HTTP_X_FORWARDED_PROTO'] = 'https';
+        $request = new \flight\net\Request();
+        $this->assertEquals('https', $request->scheme);
+        $_SERVER['HTTP_X_FORWARDED_PROTO'] = 'http';
+        $request = new \flight\net\Request();
+        $this->assertEquals('http', $request->scheme);
+
+        $_SERVER['HTTP_FRONT_END_HTTPS'] = 'on';
+        $request = new \flight\net\Request();
+        $this->assertEquals('https', $request->scheme);
+        $_SERVER['HTTP_FRONT_END_HTTPS'] = 'off';
+        $request = new \flight\net\Request();
+        $this->assertEquals('http', $request->scheme);
+
+        $_SERVER['REQUEST_SCHEME'] = 'https';
+        $request = new \flight\net\Request();
+        $this->assertEquals('https', $request->scheme);
+        $_SERVER['REQUEST_SCHEME'] = 'http';
+        $request = new \flight\net\Request();
+        $this->assertEquals('http', $request->scheme);
+    }
 }