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# Copyright (C) 1998-2009 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/>.
"""Cleanse certain headers from all messages."""
from __future__ import absolute_import, unicode_literals
__metaclass__ = type
__all__ = [
'Cleanse',
]
import logging
from email.Utils import formataddr
from zope.interface import implements
from mailman.i18n import _
from mailman.interfaces.handler import IHandler
from mailman.pipeline.cook_headers import uheader
log = logging.getLogger('mailman.post')
class Cleanse:
"""Cleanse certain headers from all messages."""
implements(IHandler)
name = 'cleanse'
description = _('Cleanse certain headers from all messages.')
def process(self, mlist, msg, msgdata):
"""See `IHandler`."""
# Remove headers that could contain passwords.
del msg['approved']
del msg['approve']
del msg['urgent']
# We remove other headers from anonymous lists.
if mlist.anonymous_list:
log.info('post to %s from %s anonymized',
mlist.fqdn_listname, msg.get('from'))
del msg['from']
del msg['reply-to']
del msg['sender']
# Hotmail sets this one
del msg['x-originating-email']
i18ndesc = str(uheader(mlist, mlist.description, 'From'))
msg['From'] = formataddr((i18ndesc, mlist.posting_address))
msg['Reply-To'] = mlist.posting_address
# Some headers can be used to fish for membership.
del msg['return-receipt-to']
del msg['disposition-notification-to']
del msg['x-confirm-reading-to']
# Pegasus mail uses this one... sigh.
del msg['x-pmrqc']
# Don't let this header be spoofed. See RFC 5064.
del msg['archived-at']
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