httpserver: Fix incorrect path joining

src/conf.py

@@ -941,7 +941,7 @@ class Directory(registry.String):
         if os.path.isabs(filename):
             filename = os.path.abspath(filename)
             selfAbs = os.path.abspath(myself)
-            commonPrefix = os.path.commonprefix([selfAbs, filename])
+            commonPrefix = os.path.commonpath([selfAbs, filename])
             filename = filename[len(commonPrefix):]
         elif not os.path.isabs(myself):
             if filename.startswith(myself):

src/httpserver.py

@@ -337,7 +337,7 @@ class Static(SupyHTTPServerCallback):
         super(Static, self).__init__()
         self._mimetype = mimetype
     def doGetOrHead(self, handler, path, write_content):
-        response = get_template(path)
+        response = get_template(path[1:]) # strip leading /
         if minisix.PY3:
             response = response.encode()
         handler.send_response(200)