From f316af69cc279c0f0b9eaad558a6c7e2ade4bb54 Mon Sep 17 00:00:00 2001
From: Calin Crisan <ccrisan@gmail.com>
Date: Sun, 8 Feb 2015 19:20:22 +0200
Subject: [PATCH] another fix for the signature algorithm

---
 src/utils.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/utils.py b/src/utils.py
index 502c4fc..eb120ab 100644
--- a/src/utils.py
+++ b/src/utils.py
@@ -294,7 +294,9 @@ def compute_signature(method, uri, body, key):
     parts = list(urlparse.urlsplit(uri))
     query = [q for q in urlparse.parse_qsl(parts[3], keep_blank_values=True) if (q[0] != '_signature')]
     query.sort(key=lambda q: q[0])
-    query = urllib.urlencode(query)
+    # "safe" characters here are set to match the encodeURIComponent JavaScript counterpart
+    query = [(n, urllib.quote(v, safe="!'()*~")) for (n, v) in query]
+    query = '&'.join([(q[0] + '=' + q[1]) for q in query])
     parts[0] = parts[1] = ''
     parts[3] = query
     uri = urlparse.urlunsplit(parts)
-- 
2.39.5