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
|
# -*- coding: utf-8 -*-
# imap.py
# Copyright (C) 2013-2015 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/>.
"""
IMAP service initialization
"""
# TODO: leave only an implementor of IService in here
import logging
import os
from collections import defaultdict
from twisted.internet import reactor
from twisted.internet.error import CannotListenError
from twisted.internet.protocol import ServerFactory
from twisted.mail import imap4
from twisted.python import log
logger = logging.getLogger(__name__)
from leap.common import events as leap_events
from leap.common.check import leap_assert_type, leap_check
from leap.mail.imap.account import IMAPAccount
from leap.mail.imap.server import LEAPIMAPServer
from leap.soledad.client import Soledad
from leap.common.events.events_pb2 import IMAP_SERVICE_STARTED
from leap.common.events.events_pb2 import IMAP_SERVICE_FAILED_TO_START
DO_MANHOLE = os.environ.get("LEAP_MAIL_MANHOLE", None)
if DO_MANHOLE:
from leap.mail.imap.service import manhole
DO_PROFILE = os.environ.get("LEAP_PROFILE", None)
if DO_PROFILE:
import cProfile
log.msg("Starting PROFILING...")
PROFILE_DAT = "/tmp/leap_mail_profile.pstats"
pr = cProfile.Profile()
pr.enable()
# The default port in which imap service will run
IMAP_PORT = 1984
class IMAPAuthRealm(object):
"""
Dummy authentication realm. Do not use in production!
"""
theAccount = None
def requestAvatar(self, avatarId, mind, *interfaces):
return imap4.IAccount, self.theAccount, lambda: None
class LeapIMAPFactory(ServerFactory):
"""
Factory for a IMAP4 server with soledad remote sync and gpg-decryption
capabilities.
"""
protocol = LEAPIMAPServer
def __init__(self, uuid, userid, soledad):
"""
Initializes the server factory.
:param uuid: user uuid
:type uuid: str
:param userid: user id (user@provider.org)
:type userid: str
:param soledad: soledad instance
:type soledad: Soledad
"""
self._uuid = uuid
self._userid = userid
self._soledad = soledad
theAccount = IMAPAccount(uuid, soledad)
self.theAccount = theAccount
self._connections = defaultdict()
# XXX how to pass the store along?
def buildProtocol(self, addr):
"""
Return a protocol suitable for the job.
:param addr: remote ip address
:type addr: str
"""
# TODO should reject anything from addr != localhost,
# just in case.
log.msg("Building protocol for connection %s" % addr)
imapProtocol = self.protocol(
uuid=self._uuid,
userid=self._userid,
soledad=self._soledad)
imapProtocol.theAccount = self.theAccount
imapProtocol.factory = self
self._connections[addr] = imapProtocol
return imapProtocol
def stopFactory(self):
# say bye!
for conn, proto in self._connections.items():
log.msg("Closing connections for %s" % conn)
proto.close_server_connection()
def doStop(self):
"""
Stops imap service (fetcher, factory and port).
"""
# mark account as unusable, so any imap command will fail
# with unauth state.
self.theAccount.end_session()
# TODO should wait for all the pending deferreds,
# the twisted way!
if DO_PROFILE:
log.msg("Stopping PROFILING")
pr.disable()
pr.dump_stats(PROFILE_DAT)
return ServerFactory.doStop(self)
def run_service(store, **kwargs):
"""
Main entry point to run the service from the client.
:param store: a soledad instance
:returns: the port as returned by the reactor when starts listening, and
the factory for the protocol.
"""
leap_check(store, "store cannot be None")
# XXX this can also be a ProxiedObject, FIXME
# leap_assert_type(store, Soledad)
port = kwargs.get('port', IMAP_PORT)
userid = kwargs.get('userid', None)
leap_check(userid is not None, "need an user id")
uuid = store.uuid
factory = LeapIMAPFactory(uuid, userid, store)
try:
tport = reactor.listenTCP(port, factory,
interface="localhost")
except CannotListenError:
logger.error("IMAP Service failed to start: "
"cannot listen in port %s" % (port,))
except Exception as exc:
logger.error("Error launching IMAP service: %r" % (exc,))
else:
# all good.
if DO_MANHOLE:
# TODO get pass from env var.too.
manhole_factory = manhole.getManholeFactory(
{'f': factory,
'a': factory.theAccount,
'gm': factory.theAccount.getMailbox},
"boss", "leap")
reactor.listenTCP(manhole.MANHOLE_PORT, manhole_factory,
interface="127.0.0.1")
logger.debug("IMAP4 Server is RUNNING in port %s" % (port,))
leap_events.signal(IMAP_SERVICE_STARTED, str(port))
# FIXME -- change service signature
return tport, factory
# not ok, signal error.
leap_events.signal(IMAP_SERVICE_FAILED_TO_START, str(port))
|
