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# Copyright (C) 2002-2011 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/>.
"""Recognizes (some) Microsoft Exchange formats."""
from __future__ import absolute_import, unicode_literals
__metaclass__ = type
__all__ = [
'Exchange',
]
import re
from email.iterators import body_line_iterator
from zope.interface import implements
from mailman.interfaces.bounce import IBounceDetector
scre = re.compile('did not reach the following recipient')
ecre = re.compile('MSEXCH:')
a1cre = re.compile('SMTP=(?P<addr>[^;]+); on ')
a2cre = re.compile('(?P<addr>[^ ]+) on ')
class Exchange:
"""Recognizes (some) Microsoft Exchange formats."""
implements(IBounceDetector)
def process(self, msg):
"""See `IBounceDetector`."""
addresses = set()
it = body_line_iterator(msg)
# Find the start line.
for line in it:
if scre.search(line):
break
else:
return []
# Search each line until we hit the end line.
for line in it:
if ecre.search(line):
break
mo = a1cre.search(line)
if not mo:
mo = a2cre.search(line)
if mo:
addresses.add(mo.group('addr'))
return list(addresses)
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