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# Copyright (C) 1998-2008 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/>.
"""Handler for auto-responses."""
__metaclass__ = type
__all__ = ['Replybot']
import time
import logging
import datetime
from string import Template
from zope.interface import implements
from mailman import Message
from mailman import Utils
from mailman.i18n import _
from mailman.interfaces import IHandler
log = logging.getLogger('mailman.error')
NODELTA = datetime.timedelta()
def process(mlist, msg, msgdata):
# Normally, the replybot should get a shot at this message, but there are
# some important short-circuits, mostly to suppress 'bot storms, at least
# for well behaved email bots (there are other governors for misbehaving
# 'bots). First, if the original message has an "X-Ack: No" header, we
# skip the replybot. Then, if the message has a Precedence header with
# values bulk, junk, or list, and there's no explicit "X-Ack: yes" header,
# we short-circuit. Finally, if the message metadata has a true 'noack'
# key, then we skip the replybot too.
ack = msg.get('x-ack', '').lower()
if ack == 'no' or msgdata.get('noack'):
return
precedence = msg.get('precedence', '').lower()
if ack <> 'yes' and precedence in ('bulk', 'junk', 'list'):
return
# Check to see if the list is even configured to autorespond to this email
# message. Note: the mailowner script sets the `toadmin' or `toowner' key
# (which for replybot purposes are equivalent), and the mailcmd script
# sets the `torequest' key.
toadmin = msgdata.get('toowner')
torequest = msgdata.get('torequest')
if ((toadmin and not mlist.autorespond_admin) or
(torequest and not mlist.autorespond_requests) or \
(not toadmin and not torequest and not mlist.autorespond_postings)):
return
# Now see if we're in the grace period for this sender. graceperiod <= 0
# means always autorespond, as does an "X-Ack: yes" header (useful for
# debugging).
sender = msg.get_sender()
now = time.time()
graceperiod = mlist.autoresponse_graceperiod
if graceperiod > NODELTA and ack <> 'yes':
if toadmin:
quiet_until = mlist.admin_responses.get(sender, 0)
elif torequest:
quiet_until = mlist.request_responses.get(sender, 0)
else:
quiet_until = mlist.postings_responses.get(sender, 0)
if quiet_until > now:
return
# Okay, we know we're going to auto-respond to this sender, craft the
# message, send it, and update the database.
realname = mlist.real_name
subject = _(
'Auto-response for your message to the "$realname" mailing list')
# Do string interpolation into the autoresponse text
d = dict(listname = realname,
listurl = mlist.script_url('listinfo'),
requestemail = mlist.request_address,
owneremail = mlist.owner_address,
)
if toadmin:
rtext = mlist.autoresponse_admin_text
elif torequest:
rtext = mlist.autoresponse_request_text
else:
rtext = mlist.autoresponse_postings_text
# Interpolation and Wrap the response text.
text = Utils.wrap(Template(rtext).safe_substitute(d))
outmsg = Message.UserNotification(sender, mlist.bounces_address,
subject, text, mlist.preferred_language)
outmsg['X-Mailer'] = _('The Mailman Replybot')
# prevent recursions and mail loops!
outmsg['X-Ack'] = 'No'
outmsg.send(mlist)
# update the grace period database
if graceperiod > NODELTA:
# graceperiod is in days, we need # of seconds
quiet_until = now + graceperiod * 24 * 60 * 60
if toadmin:
mlist.admin_responses[sender] = quiet_until
elif torequest:
mlist.request_responses[sender] = quiet_until
else:
mlist.postings_responses[sender] = quiet_until
class Replybot:
"""Send automatic responses."""
implements(IHandler)
name = 'replybot'
description = _('Send automatic responses.')
def process(self, mlist, msg, msgdata):
"""See `IHandler`."""
process(mlist, msg, msgdata)
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