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
|
# -*- coding:utf-8 -*-
## src/secrets.py
##
## Copyright (C) 2007-2008 Brendan Taylor <whateley AT gmail.com>
## Copyright (C) 2008 Jonathan Schleifer <js-gajim AT webkeks.org>
##
## This file is part of Gajim.
##
## Gajim 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; version 3 only.
##
## Gajim 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 Gajim. If not, see <http://www.gnu.org/licenses/>.
##
from common.configpaths import gajimpaths
from common import crypto
from common import exceptions
import os
import pickle
secrets_filename = gajimpaths['SECRETS_FILE']
secrets_cache = None
class Secrets:
def __init__(self, filename):
self.filename = filename
self.srs = {}
self.pubkeys = {}
self.privkeys = {}
def cancel(self):
raise exceptions.Cancelled
def save(self):
pickle.dumps(self)
f = open(secrets_filename, 'w')
f.write(pickle.dumps(self))
f.close()
def retained_secrets(self, account, bare_jid):
try:
return self.srs[account][bare_jid]
except KeyError:
return []
# retained secrets are stored as a tuple of the secret and whether the user
# has verified it
def save_new_srs(self, account, jid, secret, verified):
if not account in self.srs:
self.srs[account] = {}
if not jid in self.srs[account]:
self.srs[account][jid] = []
self.srs[account][jid].append((secret, verified))
self.save()
def find_srs(self, account, jid, srs):
our_secrets = self.srs[account][jid]
return filter(lambda (x,y): x == srs, our_secrets)[0]
# has the user verified this retained secret?
def srs_verified(self, account, jid, srs):
return self.find_srs(account, jid, srs)[1]
def replace_srs(self, account, jid, old_secret, new_secret, verified):
our_secrets = self.srs[account][jid]
idx = our_secrets.index(self.find_srs(account, jid, old_secret))
our_secrets[idx] = (new_secret, verified)
self.save()
# the public key associated with 'account'
def my_pubkey(self, account):
try:
pk = self.privkeys[account]
except KeyError:
pk = Crypto.PublicKey.RSA.generate(384, crypto.random_bytes)
self.privkeys[account] = pk
self.save()
return pk
def load_secrets(filename):
f = open(filename, 'r')
try:
secrets = pickle.loads(f.read())
except KeyError:
f.close()
secrets = Secrets(filename)
return secrets
def secrets():
global secrets_cache
if secrets_cache:
return secrets_cache
if os.path.exists(secrets_filename):
secrets_cache = load_secrets(secrets_filename)
else:
secrets_cache = Secrets(secrets_filename)
return secrets_cache
# vim: se ts=3:
|