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# Copyright (C) 1998-2018 by the Free Software Foundation, Inc.
#
# This program 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 2
# of the License, or (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
"""Handler for auto-responses.
"""
import time
from Mailman import Utils
from Mailman import Message
from Mailman.i18n import _
from Mailman.SafeDict import SafeDict
from Mailman.Logging.Syslog import syslog
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 owner script sets the `toowner' key, and the various
# confirm, join, leave, request, subscribe and unsubscribe scripts set the
# keys we use for `torequest'.
toadmin = msgdata.get('toowner')
torequest = msgdata.get('torequest') or msgdata.get('toconfirm') or \
msgdata.get('tojoin') or msgdata.get('toleave')
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 > 0 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)s" mailing list')
# Do string interpolation
d = SafeDict({'listname' : realname,
'listurl' : mlist.GetScriptURL('listinfo'),
'requestemail': mlist.GetRequestEmail(),
# BAW: Deprecate adminemail; it's not advertised but still
# supported for backwards compatibility.
'adminemail' : mlist.GetBouncesEmail(),
'owneremail' : mlist.GetOwnerEmail(),
})
# Just because we're using a SafeDict doesn't mean we can't get all sorts
# of other exceptions from the string interpolation. Let's be ultra
# conservative here.
if toadmin:
rtext = mlist.autoresponse_admin_text
elif torequest:
rtext = mlist.autoresponse_request_text
else:
rtext = mlist.autoresponse_postings_text
# Using $-strings?
if getattr(mlist, 'use_dollar_strings', 0):
rtext = Utils.to_percent(rtext)
try:
text = rtext % d
except Exception:
syslog('error', 'Bad autoreply text for list: %s\n%s',
mlist.internal_name(), rtext)
text = rtext
# Wrap the response.
text = Utils.wrap(text)
outmsg = Message.UserNotification(sender, mlist.GetBouncesEmail(),
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 > 0:
# 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
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