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
|
# -*- coding: utf-8 -*-
# session.py
# Copyright (C) 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/>.
"""
LEAP Session management.
"""
import cookielib
import urllib
from twisted.internet import defer, reactor, protocol
from twisted.internet.ssl import Certificate
from twisted.web.client import Agent, CookieAgent, HTTPConnectionPool
from twisted.web.client import BrowserLikePolicyForHTTPS
from twisted.web.http_headers import Headers
from twisted.web.iweb import IBodyProducer
from twisted.python import log
from twisted.python.filepath import FilePath
from twisted.python import log
from zope.interface import implements
from leap.bonafide import srp_auth
class LeapSession(object):
def __init__(self, credentials, api, provider_cert):
# TODO check if an anonymous credentials is passed
# TODO -- we could decorate some methods so that they
# complain if we're not authenticated.
self.username = credentials.username
self.password = credentials.password
self._api = api
customPolicy = BrowserLikePolicyForHTTPS(
Certificate.loadPEM(FilePath(provider_cert).getContent()))
# BUG XXX See https://twistedmatrix.com/trac/ticket/7843
pool = HTTPConnectionPool(reactor, persistent=False)
agent = Agent(reactor, customPolicy, connectTimeout=30, pool=pool)
cookiejar = cookielib.CookieJar()
self._agent = CookieAgent(agent, cookiejar)
self._srp_auth = srp_auth.SRPAuthMechanism()
self._srp_user = None
@defer.inlineCallbacks
def authenticate(self):
srpuser, A = self._srp_auth.initialize(
self.username, self.password)
self._srp_user = srpuser
uri, method = self._api.get_uri_and_method('handshake')
log.msg("%s to %s" % (method, uri))
params = self._srp_auth.get_handshake_params(self.username, A)
handshake = yield httpRequest(self._agent, uri, values=params,
method=method)
M = self._srp_auth.process_handshake(srpuser, handshake)
uri, method = self._api.get_uri_and_method(
'authenticate', login=self.username)
log.msg("%s to %s" % (method, uri))
params = self._srp_auth.get_authentication_params(M, A)
auth = yield httpRequest(self._agent, uri, values=params,
method=method)
uuid, token, M2 = self._srp_auth.process_authentication(auth)
self._srp_auth.verify_authentication(srpuser, M2)
defer.succeed('ok')
# XXX get_session_id??
# XXX return defer.succeed
def is_authenticated(self):
if not self._srp_user:
return False
return self._srp_user.authenticated()
def httpRequest(agent, url, values={}, headers={}, method='POST'):
headers['Content-Type'] = ['application/x-www-form-urlencoded']
data = urllib.urlencode(values)
d = agent.request(method, url, Headers(headers),
StringProducer(data) if data else None)
def handle_response(response):
if response.code == 204:
d = defer.succeed('')
else:
class SimpleReceiver(protocol.Protocol):
def __init__(s, d):
s.buf = ''
s.d = d
def dataReceived(s, data):
print "----> handle response: GOT DATA"
s.buf += data
def connectionLost(s, reason):
print "CONNECTION LOST ---", reason
# TODO: test if reason is twisted.web.client.ResponseDone,
# if not, do an errback
s.d.callback(s.buf)
d = defer.Deferred()
response.deliverBody(SimpleReceiver(d))
return d
d.addCallback(handle_response)
return d
class StringProducer(object):
implements(IBodyProducer)
def __init__(self, body):
self.body = body
self.length = len(body)
def startProducing(self, consumer):
consumer.write(self.body)
return defer.succeed(None)
def pauseProducing(self):
pass
def stopProducing(self):
pass
if __name__ == "__main__":
from leap.bonafide import provider
from twisted.cred.credentials import UsernamePassword
api = provider.LeapProviderApi('api.cdev.bitmask.net:4430', 1)
credentials = UsernamePassword('test_deb_090', 'lalalala')
cdev_pem = '/home/kali/.config/leap/providers/cdev.bitmask.net/keys/ca/cacert.pem'
session = LeapSession(credentials, api, cdev_pem)
def print_result(result):
print "Auth OK"
print "result"
def cbShutDown(ignored):
reactor.stop()
d = session.authenticate()
d.addCallback(print_result)
d.addErrback(lambda f: log.err(f))
d.addBoth(cbShutDown)
reactor.run()
|
