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
|
#!/usr/bin/env python
# -*- encoding: utf-8 -*-
# mail_receiver.py
# Copyright (C) 2013 LEAP
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
import os
import logging
import argparse
import ConfigParser
from email import message_from_string
from functools import partial
from twisted.internet import inotify, reactor
from twisted.python import filepath
from leap.mx import couchdbhelper
from leap.soledad.backends.couch import CouchDatabase
logger = logging.getLogger(__name__)
def _get_pubkey(uuid):
# TODO: implent!
logger.debug("Fetching pubkey for %s" % (uuid,))
return uuid, ""
def _encrypt_message(uuid_pubkey, message):
# TODO: implement!
uuid, pubkey = uuid_pubkey
logger.debug("Encrypting message to %s's pubkey" % (uuid,))
logger.debug("Pubkey: %s" % (pubkey,))
if pubkey is None or len(pubkey) == 0:
# TODO: This is only for testing!! REMOVE!
return uuid, message
encrypted = ""
return uuid, encrypted
def _export_message(uuid_message, couch_url):
uuid, message = uuid_message
logger.debug("Exporting message for %s" % (uuid,))
if uuid is None:
uuid = 0
db_url = couch_url + '/user-%s' % uuid
db = CouchDatabase.open_database(db_url, create=True)
doc = db.create_doc({'content': str(message)})
return True
def _conditional_remove(do_remove, filepath):
if do_remove:
# remove the original mail
try:
logger.debug("Removing %s" % (filepath.path,))
filepath.remove()
except Exception as e:
# TODO: better handle exceptions
logger.exception("%s" % (e,))
def _process_incoming_email(users_db, mail_couchdb_url_prefix, self, filepath, mask):
if os.path.split(filepath.dirname())[-1] == "new":
logger.debug("Processing new mail at %s" % (filepath.path,))
with filepath.open("r") as f:
mail_data = f.read()
mail = message_from_string(mail_data)
owner = mail["Delivered-To"]
logger.debug("%s received a new mail" % (owner,))
d = users_db.queryByLoginOrAlias(owner)
d.addCallback(_get_pubkey)
d.addCallback(_encrypt_message, (mail_data))
d.addCallback(_export_message, (mail_couchdb_url_prefix))
d.addCallback(_conditional_remove, (filepath))
def main():
epilog = "Copyright 2012 The LEAP Encryption Access Project"
parser = argparse.ArgumentParser(description="""LEAP MX Mail receiver""", epilog=epilog)
parser.add_argument('-d', '--debug', action="store_true",
help="Launches the LEAP MX mail receiver with debug output")
parser.add_argument('-l', '--logfile', metavar="LOG FILE", nargs='?',
action="store", dest="log_file",
help="Writes the logs to the specified file")
parser.add_argument('-c', '--config', metavar="CONFIG FILE", nargs='?',
action="store", dest="config",
help="Where to look for the configuration file. " \
"Default: mail_receiver.cfg")
opts, _ = parser.parse_known_args()
debug = opts.debug
config_file = opts.config
if debug:
level = logging.DEBUG
else:
level = logging.WARNING
if config_file is None:
config_file = "leap_mx.cfg"
logger.setLevel(level)
console = logging.StreamHandler()
console.setLevel(level)
formatter = logging.Formatter(
'%(asctime)s '
'- %(name)s - %(levelname)s - %(message)s')
console.setFormatter(formatter)
logger.addHandler(console)
logger.info("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~")
logger.info(" LEAP MX Mail receiver")
logger.info("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~")
logger.info("Reading configuration from %s" % (config_file,))
config = ConfigParser.ConfigParser()
config.read(config_file)
users_user = config.get("couchdb", "users_user")
users_password = config.get("couchdb", "users_password")
mail_user = config.get("couchdb", "mail_user")
mail_password = config.get("couchdb", "mail_password")
server = config.get("couchdb", "server")
port = config.get("couchdb", "port")
wm = inotify.INotify(reactor)
wm.startReading()
mask = inotify.IN_CREATE
users_db = couchdbhelper.ConnectedCouchDB(server,
port=port,
dbName="users",
username=users_user,
password=users_password)
mail_couch_url_prefix = "http://%s:%s@localhost:%s" % (mail_user,
mail_password,
port)
incoming_partial = partial(_process_incoming_email, users_db, mail_couch_url_prefix)
for section in config.sections():
if section in ("couchdb"):
continue
to_watch = config.get(section, "path")
recursive = config.getboolean(section, "recursive")
logger.debug("Watching %s --- Recursive: %s" % (to_watch, recursive))
wm.watch(filepath.FilePath(to_watch), mask, callbacks=[incoming_partial], recursive=recursive)
reactor.run()
if __name__ == "__main__":
main()
|
