From e50a442c6f03ba09a800f9999e29e9340b1d45c7 Mon Sep 17 00:00:00 2001
From: "Kali Kaneko (leap communications)" <kali@leap.se>
Date: Thu, 24 Nov 2016 16:57:56 +0100
Subject: [feature] local session service

---
 src/leap/bitmask/core/_session.py | 70 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 src/leap/bitmask/core/_session.py

(limited to 'src/leap/bitmask/core/_session.py')

diff --git a/src/leap/bitmask/core/_session.py b/src/leap/bitmask/core/_session.py
new file mode 100644
index 00000000..24070a82
--- /dev/null
+++ b/src/leap/bitmask/core/_session.py
@@ -0,0 +1,70 @@
+# -*- coding: utf-8 -*-
+# _session.py
+# Copyright (C) 2016 LEAP Encryption Acess Project
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Service for handling the local sessions.
+"""
+
+import binascii
+import os
+
+from twisted.application import service
+from twisted.logger import Logger
+
+from leap.bitmask.hooks import HookableService
+
+
+logger = Logger()
+
+
+class SessionService(HookableService):
+
+    """
+    This service holds random local-session tokens, that will be use to protect
+    the access to the API resources.
+
+    These tokens are different from the (remote) SRP session tokens: the
+    local-session tokens are ephimeral and generated by the local Bitmask
+    deamon.
+
+    Right now, they are generated when a soledad instance is successfully
+    created.  This might be subject to further discussion, but this is the
+    earliest moment in which we can decide if a user should be authenticated
+    locally: it means that the entered password is able to decrypt the local
+    store. In this way, we can protect the API resources even in the case that
+    we don't have connectivity.
+    """
+
+    name = 'sessions'
+
+    def __init__(self, basedir, tokens):
+        service.Service.__init__(self)
+        self._basedir = basedir
+        self._tokens = tokens
+
+    def startService(self):
+        logger.info('starting Session Service')
+        super(SessionService, self).startService()
+
+    def stopService(self):
+        pass
+
+    def hook_on_new_soledad_instance(self, **kw):
+        user = kw['user']
+        session_token = binascii.hexlify(os.urandom(10))
+        print '---------------------------------------------------'
+        print "hook on new soledad instance!", user, session_token
+        self._tokens[user] = session_token
-- 
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