1 files changed, 39 insertions, 0 deletions
diff --git a/app/api/auth/token.py b/app/api/auth/token.py
new file mode 100644
index 0000000..d057d22
--- /dev/null
+++ b/app/api/auth/token.py
@@ -0,0 +1,39 @@
+###############################################################################
+# Copyright (c) 2017 Koren Lev (Cisco Systems), Yaron Yogev (Cisco Systems)   #
+# and others                                                                  #
+#                                                                             #
+# All rights reserved. This program and the accompanying materials            #
+# are made available under the terms of the Apache License, Version 2.0       #
+# which accompanies this distribution, and is available at                    #
+# http://www.apache.org/licenses/LICENSE-2.0                                  #
+###############################################################################
+import datetime
+import uuid
+
+
+class Token:
+    token_lifetime = 86400
+    FIELD = 'X-AUTH-TOKEN'
+
+    @classmethod
+    def set_token_lifetime(cls, lifetime):
+        Token.token_lifetime = lifetime
+
+    @classmethod
+    def new_uuid_token(cls, method):
+        token = {}
+        token['issued_at'] = datetime.datetime.now()
+        token['expires_at'] = token['issued_at'] +\
+                              datetime.timedelta(seconds=Token.token_lifetime)
+        token['token'] = uuid.uuid4().hex
+        token['method'] = method
+        return token
+
+    @classmethod
+    def validate_token(cls, token):
+        error = None
+        now = datetime.datetime.now()
+        if now > token['expires_at']:
+            error = 'Token {0} has expired'.format(token['token'])
+
+        return error