From cbe182a298310a70ec6383ce2a23d08b2e07e905 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sybren=20A=2E=20St=C3=BCvel?= <sybren@stuvel.eu>
Date: Thu, 18 May 2017 15:30:50 +0200
Subject: [PATCH] Gravatar: support None email addresses

---
 pillar/api/utils/__init__.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pillar/api/utils/__init__.py b/pillar/api/utils/__init__.py
index bb332b27..b355a330 100644
--- a/pillar/api/utils/__init__.py
+++ b/pillar/api/utils/__init__.py
@@ -1,6 +1,7 @@
 import copy
 import hashlib
 import json
+import typing
 import urllib.request, urllib.parse, urllib.error
 
 import datetime
@@ -139,7 +140,10 @@ def str2id(document_id: str) -> bson.ObjectId:
         raise wz_exceptions.BadRequest('Invalid object ID %r' % document_id)
 
 
-def gravatar(email: str, size=64):
+def gravatar(email: str, size=64) -> typing.Optional[str]:
+    if email is None:
+        return None
+
     parameters = {'s': str(size), 'd': 'mm'}
     return "https://www.gravatar.com/avatar/" + \
            hashlib.md5(email.encode()).hexdigest() + \