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# Copyright (C) 2007-2012 by the Free Software Foundation, Inc.
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# This file is part of GNU Mailman.
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# GNU Mailman is free software: you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free
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# Software Foundation, either version 3 of the License, or (at your option)
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# GNU Mailman is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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# You should have received a copy of the GNU General Public License along with
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# GNU Mailman. If not, see <http://www.gnu.org/licenses/>.
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"""The maximum number of recipients rule."""
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from __future__ import absolute_import, print_function, unicode_literals
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from email.utils import getaddresses
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from zope.interface import implementer
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from mailman.core.i18n import _
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from mailman.interfaces.rules import IRule
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class MaximumRecipients:
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"""The maximum number of recipients rule."""
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name = 'max-recipients'
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description = _('Catch messages with too many explicit recipients.')
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def check(self, mlist, msg, msgdata):
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# Zero means any number of recipients are allowed.
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if mlist.max_num_recipients == 0:
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# Figure out how many recipients there are
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recipients = getaddresses(msg.get_all('to', []) +
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msg.get_all('cc', []))
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return len(recipients) >= mlist.max_num_recipients