--- a/src/tools/common/data_objects.py	Sun May 21 20:08:42 2017 +0200
+++ b/src/tools/common/data_objects.py	Mon May 22 23:58:26 2017 +0200
@@ -162,3 +162,32 @@
 
     def __contains__(self, item):
         return self.items.__contains__(item)
+
+
+class Identity(object):
+
+    def __init__(self, jid_str, data=None):
+        self.jid_str = jid_str
+        self.data = data if data is not None else {}
+
+    @property
+    def nick(self):
+        return self.data.get(u'nick')
+
+
+class Identities(object):
+
+    def __init__(self):
+        self.identities = {}
+
+    def __getitem__(self, jid_str):
+        try:
+            return self.identities[jid_str]
+        except KeyError:
+            return None
+
+    def __setitem__(self, jid_str, data):
+        self.identities[jid_str] = Identity(jid_str, data)
+
+    def __contains__(self, jid_str):
+        return jid_str in self.identities