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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.
"""Calculate the regular (i.e. non-digest) recipients of the message.
This module calculates the non-digest recipients for the message based on the
list's membership and configuration options. It places the list of recipients
on the `recips' attribute of the message. This attribute is used by the
SendmailDeliver and BulkDeliver modules.
"""
import email.Utils
from Mailman import mm_cfg
from Mailman import Utils
from Mailman import Message
from Mailman import Errors
from Mailman.MemberAdaptor import ENABLED
from Mailman.MailList import MailList
from Mailman.i18n import _
from Mailman.Logging.Syslog import syslog
from Mailman.Errors import MMUnknownListError
# Use set for sibling list recipient calculation
try:
set
except NameError: # Python2.3
from sets import Set as set
def process(mlist, msg, msgdata):
# Short circuit if we've already calculated the recipients list,
# regardless of whether the list is empty or not.
if msgdata.has_key('recips'):
return
# Should the original sender should be included in the recipients list?
include_sender = 1
sender = msg.get_sender()
try:
if mlist.getMemberOption(sender, mm_cfg.DontReceiveOwnPosts):
include_sender = 0
except Errors.NotAMemberError:
pass
# Support for urgent messages, which bypasses digests and disabled
# delivery and forces an immediate delivery to all members Right Now. We
# are specifically /not/ allowing the site admins password to work here
# because we want to discourage the practice of sending the site admin
# password through email in the clear. (see also Approve.py)
missing = []
password = msg.get('urgent', missing)
if password is not missing:
if mlist.Authenticate((mm_cfg.AuthListPoster,
mm_cfg.AuthListModerator,
mm_cfg.AuthListAdmin),
password):
recips = mlist.getMemberCPAddresses(mlist.getRegularMemberKeys() +
mlist.getDigestMemberKeys())
msgdata['recips'] = recips
return
else:
# Bad Urgent: password, so reject it instead of passing it on. I
# think it's better that the sender know they screwed up than to
# deliver it normally.
realname = mlist.real_name
text = _("""\
Your urgent message to the %(realname)s mailing list was not authorized for
delivery. The original message as received by Mailman is attached.
""")
raise Errors.RejectMessage, Utils.wrap(text)
# Calculate the regular recipients of the message
recips = [mlist.getMemberCPAddress(m)
for m in mlist.getRegularMemberKeys()
if mlist.getDeliveryStatus(m) == ENABLED]
# Remove the sender if they don't want to receive their own posts
if not include_sender:
try:
recips.remove(mlist.getMemberCPAddress(sender))
except (Errors.NotAMemberError, ValueError):
# Sender does not want to get copies of their own messages (not
# metoo), but delivery to their address is disabled (nomail). Or
# the sender is not a member of the mailing list.
pass
# Handle topic classifications
do_topic_filters(mlist, msg, msgdata, recips)
# Regular delivery exclude/include (if in/not_in To: or Cc:) lists
recips = do_exclude(mlist, msg, msgdata, recips)
recips = do_include(mlist, msg, msgdata, recips)
# Bookkeeping
msgdata['recips'] = recips
def do_topic_filters(mlist, msg, msgdata, recips):
if not mlist.topics_enabled:
# MAS: if topics are currently disabled for the list, send to all
# regardless of ReceiveNonmatchingTopics
return
hits = msgdata.get('topichits')
zaprecips = []
if hits:
# The message hit some topics, so only deliver this message to those
# who are interested in one of the hit topics.
for user in recips:
utopics = mlist.getMemberTopics(user)
if not utopics:
# This user is not interested in any topics, so they get all
# postings.
continue
# BAW: Slow, first-match, set intersection!
for topic in utopics:
if topic in hits:
# The user wants this message
break
else:
# The user was interested in topics, but not any of the ones
# this message matched, so zap him.
zaprecips.append(user)
else:
# The semantics for a message that did not hit any of the pre-canned
# topics is to troll through the membership list, looking for users
# who selected at least one topic of interest, but turned on
# ReceiveNonmatchingTopics.
for user in recips:
if not mlist.getMemberTopics(user):
# The user did not select any topics of interest, so he gets
# this message by default.
continue
if not mlist.getMemberOption(user,
mm_cfg.ReceiveNonmatchingTopics):
# The user has interest in some topics, but elects not to
# receive message that match no topics, so zap him.
zaprecips.append(user)
# Otherwise, the user wants non-matching messages.
# Prune out the non-receiving users
for user in zaprecips:
recips.remove(user)
def do_exclude(mlist, msg, msgdata, recips):
# regular_exclude_lists are the other mailing lists on this mailman
# installation whose members are excluded from the regular (non-digest)
# delivery of this list if those list addresses appear in To: or Cc:
# headers.
if not mlist.regular_exclude_lists:
return recips
recips = set(recips)
destinations = email.Utils.getaddresses(msg.get_all('to', []) +
msg.get_all('cc', []))
destinations = [y.lower() for x,y in destinations]
for listname in mlist.regular_exclude_lists:
listname = listname.lower()
if listname not in destinations:
continue
listlhs, hostname = listname.split('@')
if listlhs == mlist.internal_name():
syslog('error', 'Exclude list %s is a self reference.',
listname)
continue
try:
slist = MailList(listlhs, lock=False)
except MMUnknownListError:
syslog('error', 'Exclude list %s not found.', listname)
continue
if not mm_cfg.ALLOW_CROSS_DOMAIN_SIBLING \
and slist.host_name != hostname:
syslog('error', 'Exclude list %s is not in the same domain.',
listname)
continue
if mlist.regular_exclude_ignore:
for sender in msg.get_senders():
if slist.isMember(sender):
break
for sender in Utils.check_eq_domains(sender,
slist.equivalent_domains):
if slist.isMember(sender):
break
if slist.isMember(sender):
break
else:
continue
srecips = set([slist.getMemberCPAddress(m)
for m in slist.getRegularMemberKeys()
if slist.getDeliveryStatus(m) == ENABLED])
recips -= srecips
return list(recips)
def do_include(mlist, msg, msgdata, recips):
# regular_include_lists are the other mailing lists on this mailman
# installation whose members are included in the regular (non-digest)
# delivery if those list addresses don't appear in To: or Cc: headers.
if not mlist.regular_include_lists:
return recips
recips = set(recips)
destinations = email.Utils.getaddresses(msg.get_all('to', []) +
msg.get_all('cc', []))
destinations = [y.lower() for x,y in destinations]
for listname in mlist.regular_include_lists:
listname = listname.lower()
if listname in destinations:
continue
listlhs, hostname = listname.split('@')
if listlhs == mlist.internal_name():
syslog('error', 'Include list %s is a self reference.',
listname)
continue
try:
slist = MailList(listlhs, lock=False)
except MMUnknownListError:
syslog('error', 'Include list %s not found.', listname)
continue
if not mm_cfg.ALLOW_CROSS_DOMAIN_SIBLING \
and slist.host_name != hostname:
syslog('error', 'Include list %s is not in the same domain.',
listname)
continue
srecips = set([slist.getMemberCPAddress(m)
for m in slist.getRegularMemberKeys()
if slist.getDeliveryStatus(m) == ENABLED])
recips |= srecips
return list(recips)
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