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# Copyright (C) 2011-2012 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/>.
"""Ban manager."""
from __future__ import absolute_import, unicode_literals
__metaclass__ = type
__all__ = [
'BanManager',
]
import re
from storm.locals import Int, Unicode
from zope.interface import implements
from mailman.config import config
from mailman.database.model import Model
from mailman.interfaces.bans import IBan, IBanManager
class Ban(Model):
implements(IBan)
id = Int(primary=True)
email = Unicode()
mailing_list = Unicode()
def __init__(self, email, mailing_list):
super(Ban, self).__init__()
self.email = email
self.mailing_list = mailing_list
class BanManager:
implements(IBanManager)
def ban(self, email, mailing_list=None):
"""See `IBanManager`."""
bans = config.db.store.find(
Ban, email=email, mailing_list=mailing_list)
if bans.count() == 0:
ban = Ban(email, mailing_list)
config.db.store.add(ban)
def unban(self, email, mailing_list=None):
"""See `IBanManager`."""
ban = config.db.store.find(
Ban, email=email, mailing_list=mailing_list).one()
if ban is not None:
config.db.store.remove(ban)
def is_banned(self, email, mailing_list=None):
"""See `IBanManager`."""
# A specific mailing list ban is being checked, however the email
# address could be banned specifically, or globally.
if mailing_list is not None:
# Try specific bans first.
bans = config.db.store.find(
Ban, email=email, mailing_list=mailing_list)
if bans.count() > 0:
return True
# Try global bans next.
bans = config.db.store.find(Ban, email=email, mailing_list=None)
if bans.count() > 0:
return True
# Now try specific mailing list bans, but with a pattern.
bans = config.db.store.find(Ban, mailing_list=mailing_list)
for ban in bans:
if (ban.email.startswith('^') and
re.match(ban.email, email, re.IGNORECASE) is not None):
return True
# And now try global pattern bans.
bans = config.db.store.find(Ban, mailing_list=None)
for ban in bans:
if (ban.email.startswith('^') and
re.match(ban.email, email, re.IGNORECASE) is not None):
return True
else:
# The client is asking for global bans. Look up bans on the
# specific email address first.
bans = config.db.store.find(
Ban, email=email, mailing_list=None)
if bans.count() > 0:
return True
# And now look for global pattern bans.
bans = config.db.store.find(Ban, mailing_list=None)
for ban in bans:
if (ban.email.startswith('^') and
re.match(ban.email, email, re.IGNORECASE) is not None):
return True
return False
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