1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
# 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, print_function, unicode_literals
__metaclass__ = type
__all__ = [
'BanManager',
]
import re
from storm.locals import Int, Unicode
from zope.interface import implementer
from mailman.database.model import Model
from mailman.database.transaction import dbconnection
from mailman.interfaces.bans import IBan, IBanManager
@implementer(IBan)
class Ban(Model):
"""See `IBan`."""
id = Int(primary=True)
email = Unicode()
list_id = Unicode()
def __init__(self, email, list_id):
super(Ban, self).__init__()
self.email = email
self.list_id = list_id
@implementer(IBanManager)
class BanManager:
"""See `IBanManager`."""
def __init__(self, mailing_list=None):
self._list_id = (None if mailing_list is None
else mailing_list.list_id)
@dbconnection
def ban(self, store, email):
"""See `IBanManager`."""
bans = store.find(Ban, email=email, list_id=self._list_id)
if bans.count() == 0:
ban = Ban(email, self._list_id)
store.add(ban)
@dbconnection
def unban(self, store, email):
"""See `IBanManager`."""
ban = store.find(Ban, email=email, list_id=self._list_id).one()
if ban is not None:
store.remove(ban)
@dbconnection
def is_banned(self, store, email):
"""See `IBanManager`."""
list_id = self._list_id
if list_id is None:
# The client is asking for global bans. Look up bans on the
# specific email address first.
bans = store.find(Ban, email=email, list_id=None)
if bans.count() > 0:
return True
# And now look for global pattern bans.
bans = store.find(Ban, list_id=None)
for ban in bans:
if (ban.email.startswith('^') and
re.match(ban.email, email, re.IGNORECASE) is not None):
return True
else:
# This is a list-specific ban.
bans = store.find(Ban, email=email, list_id=list_id)
if bans.count() > 0:
return True
# Try global bans next.
bans = store.find(Ban, email=email, list_id=None)
if bans.count() > 0:
return True
# Now try specific mailing list bans, but with a pattern.
bans = store.find(Ban, list_id=list_id)
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 = store.find(Ban, list_id=None)
for ban in bans:
if (ban.email.startswith('^') and
re.match(ban.email, email, re.IGNORECASE) is not None):
return True
return False
|