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# 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
import errno
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()
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