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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/>.
"""Bounce queue runner."""
import logging
from zope.component import getUtility
from mailman.app.bounces import (
ProbeVERP, StandardVERP, maybe_forward, scan_message)
from mailman.interfaces.bounce import BounceContext, IBounceProcessor, Stop
from mailman.queue import Runner
COMMASPACE = ', '
log = logging.getLogger('mailman.bounce')
elog = logging.getLogger('mailman.error')
class BounceRunner(Runner):
"""The bounce runner."""
def __init__(self, name, slice=None):
super(BounceRunner, self).__init__(name, slice)
self._processor = getUtility(IBounceProcessor)
def _dispose(self, mlist, msg, msgdata):
# List isn't doing bounce processing?
if not mlist.bounce_processing:
return False
# Try VERP detection first, since it's quick and easy
context = BounceContext.normal
addresses = StandardVERP().get_verp(mlist, msg)
if addresses:
# We have an address, but check if the message is non-fatal. It
# will be non-fatal if the bounce scanner returns Stop. It will
# return a set of addresses when the bounce is fatal, but we don't
# care about those addresses, since we got it out of the VERP.
if scan_message(mlist, msg) is Stop:
return False
else:
# See if this was a probe message.
addresses = ProbeVERP().get_verp(mlist, msg)
if addresses:
context = BounceContext.probe
else:
# That didn't give us anything useful, so try the old fashion
# bounce matching modules.
addresses = scan_message(mlist, msg)
if addresses is Stop:
# This is a recognized, non-fatal notice. Ignore it.
return False
# If that still didn't return us any useful addresses, then send it on
# or discard it.
if len(addresses) > 0:
for address in addresses:
self._processor.register(mlist, address, msg, context)
else:
log.info('Bounce message w/no discernable addresses: %s',
msg.get('message-id', 'n/a'))
maybe_forward(mlist, msg)
# Dequeue this message.
return False
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