1 files changed, 33 insertions, 0 deletions
diff --git a/src/leap/bonafide/_decorators.py b/src/leap/bonafide/_decorators.py
new file mode 100644
index 0000000..cfd6ec0
--- /dev/null
+++ b/src/leap/bonafide/_decorators.py
@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+# _decorators.py
+# Copyright (C) 2015 LEAP
+#
+# 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/>.
+"""
+Decorators used in bonafide.
+"""
+
+
+def needs_authentication(func):
+    """
+    Decorate a method so that it will not be called if the instance
+    attribute `is_authenticated` does not evaluate to True.
+    """
+    def decorated(*args, **kwargs):
+        instance = args[0]
+        allowed = getattr(instance, 'is_authenticated')
+        if not allowed:
+            raise RuntimeError('This method requires authentication')
+        return func(*args, **kwargs)
+    return decorated