1 files changed, 68 insertions, 0 deletions
diff --git a/src/mailman/interfaces/mime.py b/src/mailman/interfaces/mime.py
new file mode 100644
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+++ b/src/mailman/interfaces/mime.py
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+# Copyright (C) 2009 by the Free Software Foundation, Inc.
+#
+# This file is part of GNU Mailman.
+#
+# GNU Mailman 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.
+#
+# GNU Mailman 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
+# GNU Mailman.  If not, see <http://www.gnu.org/licenses/>.
+
+"""MIME content filtering."""
+
+from __future__ import absolute_import, unicode_literals
+
+__metaclass__ = type
+__all__ = [
+    'FilterAction',
+    'FilterType',
+    'IContentFilter',
+    ]
+
+
+from munepy import Enum
+from zope.interface import Interface, Attribute
+
+
+
+class FilterAction(Enum):
+    # Discard a message that matches the content type filter.
+    discard = 0
+    # Bounce the message back to the original author.
+    bounce = 1
+    # Discard and forward the message on to the list owner.
+    forward = 2
+    # Discard, but preserve it.
+    preserve = 3
+
+
+class FilterType(Enum):
+    # Filter MIME type.
+    filter_mime = 0
+    # Pass MIME type.
+    pass_mime = 1
+    # Filter file extension.
+    filter_extension = 2
+    # Pass file extension.
+    pass_extension = 3
+
+
+
+class IContentFilter(Interface):
+    """A single content filter settings for a mailing list."""
+
+    mailing_list = Attribute(
+        """The mailing list for this content filter.""")
+
+    filter_pattern = Attribute(
+        """The filter/pass content pattern.""")
+
+    filter_type = Attribute(
+        """Type of filter.""")