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# Copyright (C) 2009-2016 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 enum import Enum
from mailman import public
from zope.interface import Interface, Attribute
@public
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
@public
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
@public
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.""")
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