--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/frontends/src/tools/jid.py	Tue Aug 26 12:52:46 2014 +0200
@@ -0,0 +1,48 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+# SAT: a jabber client
+# Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 Jérôme Poisson (goffi@goffi.org)
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+class JID(unicode):
+    """This class help manage JID (Node@Domaine/Resource)"""
+
+    def __new__(cls, jid):
+        self = unicode.__new__(cls, jid)
+        self.__parse()
+        return self
+
+    def __parse(self):
+        """find node domain and resource"""
+        node_end = self.find('@')
+        if node_end < 0:
+            node_end = 0
+        domain_end = self.find('/')
+        if domain_end < 1:
+            domain_end = len(self)
+        self.node = self[:node_end]
+        self.domain = self[(node_end + 1) if node_end else 0:domain_end]
+        self.resource = self[domain_end + 1:]
+        if not node_end:
+            self.bare = self
+        else:
+            self.bare = self.node + '@' + self.domain
+
+    def is_valid(self):
+        """return True if the jid is xmpp compliant"""
+        #TODO: implement real check, according to RFCs
+        return self.domain != ""