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# Copyright (C) 2001-2011 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 simple heuristically delimited warnings."""
from __future__ import absolute_import, unicode_literals
__metaclass__ = type
__all__ = [
'SimpleWarning',
]
from mailman.bouncers.simplematch import _c
from mailman.bouncers.simplematch import SimpleMatch
from mailman.interfaces.bounce import NonFatal
# This is a list of tuples of the form
#
# (start cre, end cre, address cre)
#
# where 'cre' means compiled regular expression, start is the line just before
# the bouncing address block, end is the line just after the bouncing address
# block, and address cre is the regexp that will recognize the addresses. It
# must have a group called 'addr' which will contain exactly and only the
# address that bounced.
PATTERNS = [
# pop3.pta.lia.net
(_c('The address to which the message has not yet been delivered is'),
_c('No action is required on your part'),
_c(r'\s*(?P<addr>\S+@\S+)\s*')),
# This is from MessageSwitch. It is a kludge because the text that
# identifies it as a warning only comes after the address. We can't
# use ecre, because it really isn't significant, so we fake it. Once
# we see the start, we know it's a warning, and we're going to return
# Stop anyway, so we match anything for the address and end.
(_c('This is just a warning, you do not need to take any action'),
_c('.+'),
_c('(?P<addr>.+)')),
# Symantec_AntiVirus_for_SMTP_Gateways - see comments for MessageSwitch
(_c('Delivery attempts will continue to be made'),
_c('.+'),
_c('(?P<addr>.+)')),
# Next one goes here...
]
class SimpleWarning(SimpleMatch):
"""Recognizes simple heuristically delimited warnings."""
PATTERNS = PATTERNS
def process(self, msg):
"""See `SimpleMatch`."""
if super(SimpleWarning, self).process(msg):
# It's a recognized warning so stop now.
return NonFatal
else:
return None
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