From cd9207804348fac3ef0445036dfe3a2e881e3ff8 Mon Sep 17 00:00:00 2001
From: Gunther Brunner <gunta85@gmail.com>
Date: Wed, 1 Oct 2014 17:53:30 +0900
Subject: [PATCH] Add download query parameter to download images as
 attachment.

---
 lib/units/storage/plugins/image/index.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/units/storage/plugins/image/index.js b/lib/units/storage/plugins/image/index.js
index 9fe4d2b9..88b16d31 100644
--- a/lib/units/storage/plugins/image/index.js
+++ b/lib/units/storage/plugins/image/index.js
@@ -31,6 +31,12 @@ module.exports = function(options) {
         })
         .then(function(out) {
           res.status(200)
+
+          if (typeof req.query.download !== 'undefined') {
+            res.set('Content-Disposition',
+              'attachment; filename="' + req.params['0'] + '"')
+          }
+
           out.pipe(res)
         })
         .catch(function(err) {