Add user email verification

powerdnsadmin/services/token.py

@@ -0,0 +1,18 @@
+from flask import current_app
+from itsdangerous import URLSafeTimedSerializer
+
+
+def generate_confirmation_token(email):
+    serializer = URLSafeTimedSerializer(current_app.config['SECRET_KEY'])
+    return serializer.dumps(email, salt=current_app.config['SALT'])
+
+
+def confirm_token(token, expiration=86400):
+    serializer = URLSafeTimedSerializer(current_app.config['SECRET_KEY'])
+    try:
+        email = serializer.loads(token,
+                                 salt=current_app.config['SALT'],
+                                 max_age=expiration)
+    except:
+        return False
+    return email