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
|
# Authors: Rob Crittenden <rcritten@redhat.com>
#
# Copyright (C) 2009 Red Hat
# see file 'COPYING' for use and warranty information
#
# 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; version 2 only
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
import httplib
import getpass
import socket
from nss.error import NSPRError
import nss.io as io
import nss.nss as nss
import nss.ssl as ssl
try:
from httplib import SSLFile
from httplib import FakeSocket
except ImportError:
from ipapython.ipasslfile import SSLFile
from ipapython.ipasslfile import FakeSocket
def client_auth_data_callback(ca_names, chosen_nickname, password, certdb):
cert = None
if chosen_nickname:
try:
cert = nss.find_cert_from_nickname(chosen_nickname, password)
priv_key = nss.find_key_by_any_cert(cert, password)
return cert, priv_key
except NSPRError:
return False
else:
nicknames = nss.get_cert_nicknames(certdb, nss.SEC_CERT_NICKNAMES_USER)
for nickname in nicknames:
try:
cert = nss.find_cert_from_nickname(nickname, password)
if cert.check_valid_times():
if cert.has_signer_in_ca_names(ca_names):
priv_key = nss.find_key_by_any_cert(cert, password)
return cert, priv_key
except NSPRError:
return False
return False
class SSLFile(SSLFile):
"""
Override the _read method so we can use the NSS recv method.
"""
def _read(self):
buf = ''
while True:
try:
buf = self._ssl.recv(self._bufsize)
except NSPRError, e:
raise e
else:
break
return buf
class NSSFakeSocket(FakeSocket):
def makefile(self, mode, bufsize=None):
if mode != 'r' and mode != 'rb':
raise httplib.UnimplementedFileMode()
return SSLFile(self._shared, self._ssl, bufsize)
def send(self, stuff, flags = 0):
return self._ssl.send(stuff)
sendall = send
class NSSConnection(httplib.HTTPConnection):
default_port = httplib.HTTPSConnection.default_port
def __init__(self, host, port=None, key_file=None, cert_file=None,
ca_file='/etc/pki/tls/certs/ca-bundle.crt', strict=None,
dbdir=None):
httplib.HTTPConnection.__init__(self, host, port, strict)
self.key_file = key_file
self.cert_file = cert_file
self.ca_file = ca_file
if not dbdir:
raise RuntimeError("dbdir is required")
ssl.nssinit(dbdir)
ssl.set_domestic_policy()
nss.set_password_callback(self.password_callback)
# Create the socket here so we can do things like let the caller
# override the NSS callbacks
self.sslsock = ssl.SSLSocket()
self.sslsock.set_ssl_option(ssl.SSL_SECURITY, True)
self.sslsock.set_ssl_option(ssl.SSL_HANDSHAKE_AS_CLIENT, True)
self.sslsock.set_handshake_callback(self.handshake_callback)
def password_callback(self, slot, retry, password):
if not retry and password: return password
return getpass.getpass("Enter password for %s: " % slot.token_name);
def handshake_callback(self, sock):
"""
Verify callback. If we get here then the certificate is ok.
"""
if self.debuglevel > 0:
print "handshake complete, peer = %s" % (sock.get_peer_name())
pass
def connect(self):
self.sslsock.set_hostname(self.host)
net_addr = io.NetworkAddress(self.host, self.port)
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.sslsock.connect(net_addr)
self.sock = NSSFakeSocket(sock, self.sslsock)
class NSSHTTPS(httplib.HTTP):
_connection_class = NSSConnection
def __init__(self, host='', port=None, key_file=None, cert_file=None,
ca_file='/etc/pki/tls/certs/ca-bundle.crt', strict=None):
# provide a default host, pass the X509 cert info
# urf. compensate for bad input.
if port == 0:
port = None
self._setup(self._connection_class(host, port, key_file,
cert_file, ca_file, strict))
# we never actually use these for anything, but we keep them
# here for compatibility with post-1.5.2 CVS.
self.key_file = key_file
self.cert_file = cert_file
self.ca_file = ca_file
if __name__ == "__main__":
h = NSSConnection("www.verisign.com", 443, dbdir="/etc/pki/nssdb")
h.set_debuglevel(1)
h.request("GET", "/")
res = h.getresponse()
print res.status
data = res.read()
print data
h.close()
|
