Add redirect to HTTPS option

Summary: Rehash of D3411. In cgi/fcgi setups we have no idea if the request is HTTP or HTTPS as far as I can tell, so make this config-triggered again. Also handle @vrana's "off" case.

Test Plan: Set this flag, observed redirect to https when `$_SERVER['HTTPS']` was absent.

Reviewers: nh, vrana

Reviewed By: nh

CC: aran

Differential Revision: https://secure.phabricator.com/D3420

src/aphront/configuration/AphrontApplicationConfiguration.php

@@ -119,6 +119,15 @@ abstract class AphrontApplicationConfiguration {
     $request = $this->getRequest();
     $path = $request->getPath();
 
+    if (PhabricatorEnv::getEnvConfig('security.require-https')) {
+      if (!$request->isHTTPS()) {
+        $uri = $request->getRequestURI();
+        $uri->setDomain($request->getHost());
+        $uri->setProtocol('https');
+        return $this->buildRedirectController($uri);
+      }
+    }
+
     list($controller, $uri_data) = $this->buildControllerForPath($path);
     if (!$controller) {
       if (!preg_match('@/$@', $path)) {