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
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
# 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.
"""Provide a password-interface wrapper around private archives."""
import os
import sys
import cgi
import mimetypes
from Mailman import mm_cfg
from Mailman import Utils
from Mailman import MailList
from Mailman import Errors
from Mailman import i18n
from Mailman.htmlformat import *
from Mailman.Logging.Syslog import syslog
# Set up i18n. Until we know which list is being requested, we use the
# server's default.
_ = i18n._
i18n.set_language(mm_cfg.DEFAULT_SERVER_LANGUAGE)
SLASH = '/'
def true_path(path):
"Ensure that the path is safe by removing .."
# Workaround for path traverse vulnerability. Unsuccessful attempts will
# be logged in logs/error.
parts = [x for x in path.split(SLASH) if x not in ('.', '..')]
return SLASH.join(parts)[1:]
def guess_type(url, strict):
if hasattr(mimetypes, 'common_types'):
return mimetypes.guess_type(url, strict)
return mimetypes.guess_type(url)
def main():
doc = Document()
doc.set_language(mm_cfg.DEFAULT_SERVER_LANGUAGE)
parts = Utils.GetPathPieces()
if not parts:
doc.SetTitle(_("Private Archive Error"))
doc.AddItem(Header(3, _("You must specify a list.")))
print doc.Format()
return
path = os.environ.get('PATH_INFO')
tpath = true_path(path)
if tpath <> path[1:]:
msg = _('Private archive - "./" and "../" not allowed in URL.')
doc.SetTitle(msg)
doc.AddItem(Header(2, msg))
print doc.Format()
syslog('mischief', 'Private archive hostile path: %s', path)
return
# BAW: This needs to be converted to the Site module abstraction
true_filename = os.path.join(
mm_cfg.PRIVATE_ARCHIVE_FILE_DIR, tpath)
listname = parts[0].lower()
mboxfile = ''
if len(parts) > 1:
mboxfile = parts[1]
# See if it's the list's mbox file is being requested
if listname.endswith('.mbox') and mboxfile.endswith('.mbox') and \
listname[:-5] == mboxfile[:-5]:
listname = listname[:-5]
else:
mboxfile = ''
# If it's a directory, we have to append index.html in this script. We
# must also check for a gzipped file, because the text archives are
# usually stored in compressed form.
if os.path.isdir(true_filename):
true_filename = true_filename + '/index.html'
if not os.path.exists(true_filename) and \
os.path.exists(true_filename + '.gz'):
true_filename = true_filename + '.gz'
try:
mlist = MailList.MailList(listname, lock=0)
except Errors.MMListError, e:
# Avoid cross-site scripting attacks
safelistname = Utils.websafe(listname)
msg = _('No such list <em>%(safelistname)s</em>')
doc.SetTitle(_("Private Archive Error - %(msg)s"))
doc.AddItem(Header(2, msg))
# Send this with a 404 status.
print 'Status: 404 Not Found'
print doc.Format()
syslog('error', 'private: No such list "%s": %s\n', listname, e)
return
i18n.set_language(mlist.preferred_language)
doc.set_language(mlist.preferred_language)
cgidata = cgi.FieldStorage()
try:
username = cgidata.getfirst('username', '')
except TypeError:
# Someone crafted a POST with a bad Content-Type:.
doc.AddItem(Header(2, _("Error")))
doc.AddItem(Bold(_('Invalid options to CGI script.')))
# Send this with a 400 status.
print 'Status: 400 Bad Request'
print doc.Format()
return
password = cgidata.getfirst('password', '')
is_auth = 0
realname = mlist.real_name
message = ''
if not mlist.WebAuthenticate((mm_cfg.AuthUser,
mm_cfg.AuthListModerator,
mm_cfg.AuthListAdmin,
mm_cfg.AuthSiteAdmin),
password, username):
if cgidata.has_key('submit'):
# This is a re-authorization attempt
message = Bold(FontSize('+1', _('Authorization failed.'))).Format()
remote = os.environ.get('HTTP_FORWARDED_FOR',
os.environ.get('HTTP_X_FORWARDED_FOR',
os.environ.get('REMOTE_ADDR',
'unidentified origin')))
syslog('security',
'Authorization failed (private): user=%s: list=%s: remote=%s',
username, listname, remote)
# give an HTTP 401 for authentication failure
print 'Status: 401 Unauthorized'
# Are we processing a password reminder from the login screen?
if cgidata.has_key('login-remind'):
if username:
message = Bold(FontSize('+1', _("""If you are a list member,
your password has been emailed to you."""))).Format()
else:
message = Bold(FontSize('+1',
_('Please enter your email address'))).Format()
if mlist.isMember(username):
mlist.MailUserPassword(username)
elif username:
# Not a member
if mlist.private_roster == 0:
# Public rosters
safeuser = Utils.websafe(username)
message = Bold(FontSize('+1',
_('No such member: %(safeuser)s.'))).Format()
else:
syslog('mischief',
'Reminder attempt of non-member w/ private rosters: %s',
username)
# Output the password form
charset = Utils.GetCharSet(mlist.preferred_language)
print 'Content-type: text/html; charset=' + charset + '\n\n'
# Put the original full path in the authorization form, but avoid
# trailing slash if we're not adding parts. We add it below.
action = mlist.GetScriptURL('private', absolute=1)
if mboxfile:
action += '.mbox'
if parts[1:]:
action = os.path.join(action, SLASH.join(parts[1:]))
# If we added '/index.html' to true_filename, add a slash to the URL.
# We need this because we no longer add the trailing slash in the
# private.html template. It's always OK to test parts[-1] since we've
# already verified parts[0] is listname. The basic rule is if the
# post URL (action) is a directory, it must be slash terminated, but
# not if it's a file. Otherwise, relative links in the target archive
# page don't work.
if true_filename.endswith('/index.html') and parts[-1] <> 'index.html':
action += SLASH
# Escape web input parameter to avoid cross-site scripting.
print Utils.maketext(
'private.html',
{'action' : Utils.websafe(action),
'realname': mlist.real_name,
'message' : message,
}, mlist=mlist)
return
lang = mlist.getMemberLanguage(username)
i18n.set_language(lang)
doc.set_language(lang)
# Authorization confirmed... output the desired file
try:
ctype, enc = guess_type(path, strict=0)
if ctype is None:
ctype = 'text/html'
if mboxfile:
f = open(os.path.join(mlist.archive_dir() + '.mbox',
mlist.internal_name() + '.mbox'))
ctype = 'text/plain'
elif true_filename.endswith('.gz'):
import gzip
f = gzip.open(true_filename, 'r')
else:
f = open(true_filename, 'r')
except IOError:
msg = _('Private archive file not found')
doc.SetTitle(msg)
doc.AddItem(Header(2, msg))
print 'Status: 404 Not Found'
print doc.Format()
syslog('error', 'Private archive file not found: %s', true_filename)
else:
print 'Content-type: %s\n' % ctype
sys.stdout.write(f.read())
f.close()
|
