/
test_ssl.py
4134 lines (3683 loc) · 174 KB
/
test_ssl.py
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# Test the support for SSL and sockets
import sys
import unittest
from test import support
import socket
import select
import time
import datetime
import gc
import os
import errno
import pprint
import urllib.request
import threading
import traceback
import asyncore
import weakref
import platform
import functools
import sysconfig
try:
import ctypes
except ImportError:
ctypes = None
ssl = support.import_module("ssl")
PROTOCOLS = sorted(ssl._PROTOCOL_NAMES)
HOST = support.HOST
IS_LIBRESSL = ssl.OPENSSL_VERSION.startswith('LibreSSL')
IS_OPENSSL_1_1_0 = not IS_LIBRESSL and ssl.OPENSSL_VERSION_INFO >= (1, 1, 0)
IS_OPENSSL_1_1_1 = not IS_LIBRESSL and ssl.OPENSSL_VERSION_INFO >= (1, 1, 1)
PY_SSL_DEFAULT_CIPHERS = sysconfig.get_config_var('PY_SSL_DEFAULT_CIPHERS')
def data_file(*name):
return os.path.join(os.path.dirname(__file__), *name)
# The custom key and certificate files used in test_ssl are generated
# using Lib/test/make_ssl_certs.py.
# Other certificates are simply fetched from the Internet servers they
# are meant to authenticate.
CERTFILE = data_file("keycert.pem")
BYTES_CERTFILE = os.fsencode(CERTFILE)
ONLYCERT = data_file("ssl_cert.pem")
ONLYKEY = data_file("ssl_key.pem")
BYTES_ONLYCERT = os.fsencode(ONLYCERT)
BYTES_ONLYKEY = os.fsencode(ONLYKEY)
CERTFILE_PROTECTED = data_file("keycert.passwd.pem")
ONLYKEY_PROTECTED = data_file("ssl_key.passwd.pem")
KEY_PASSWORD = "somepass"
CAPATH = data_file("capath")
BYTES_CAPATH = os.fsencode(CAPATH)
CAFILE_NEURONIO = data_file("capath", "4e1295a3.0")
CAFILE_CACERT = data_file("capath", "5ed36f99.0")
WRONG_CERT = data_file("wrongcert.pem")
CERTFILE_INFO = {
'issuer': ((('countryName', 'XY'),),
(('localityName', 'Castle Anthrax'),),
(('organizationName', 'Python Software Foundation'),),
(('commonName', 'localhost'),)),
'notAfter': 'Jan 17 19:09:06 2028 GMT',
'notBefore': 'Jan 19 19:09:06 2018 GMT',
'serialNumber': 'F9BA076D5B6ABD9B',
'subject': ((('countryName', 'XY'),),
(('localityName', 'Castle Anthrax'),),
(('organizationName', 'Python Software Foundation'),),
(('commonName', 'localhost'),)),
'subjectAltName': (('DNS', 'localhost'),),
'version': 3
}
# empty CRL
CRLFILE = data_file("revocation.crl")
# Two keys and certs signed by the same CA (for SNI tests)
SIGNED_CERTFILE = data_file("keycert3.pem")
SIGNED_CERTFILE_HOSTNAME = 'localhost'
SIGNED_CERTFILE_INFO = {
'OCSP': ('http://testca.pythontest.net/testca/ocsp/',),
'caIssuers': ('http://testca.pythontest.net/testca/pycacert.cer',),
'crlDistributionPoints': ('http://testca.pythontest.net/testca/revocation.crl',),
'issuer': ((('countryName', 'XY'),),
(('organizationName', 'Python Software Foundation CA'),),
(('commonName', 'our-ca-server'),)),
'notAfter': 'Nov 28 19:09:06 2027 GMT',
'notBefore': 'Jan 19 19:09:06 2018 GMT',
'serialNumber': '82EDBF41C880919C',
'subject': ((('countryName', 'XY'),),
(('localityName', 'Castle Anthrax'),),
(('organizationName', 'Python Software Foundation'),),
(('commonName', 'localhost'),)),
'subjectAltName': (('DNS', 'localhost'),),
'version': 3
}
SIGNED_CERTFILE2 = data_file("keycert4.pem")
SIGNED_CERTFILE2_HOSTNAME = 'fakehostname'
SIGNED_CERTFILE_ECC = data_file("keycertecc.pem")
SIGNED_CERTFILE_ECC_HOSTNAME = 'localhost-ecc'
# Same certificate as pycacert.pem, but without extra text in file
SIGNING_CA = data_file("capath", "ceff1710.0")
# cert with all kinds of subject alt names
ALLSANFILE = data_file("allsans.pem")
IDNSANSFILE = data_file("idnsans.pem")
REMOTE_HOST = "self-signed.pythontest.net"
EMPTYCERT = data_file("nullcert.pem")
BADCERT = data_file("badcert.pem")
NONEXISTINGCERT = data_file("XXXnonexisting.pem")
BADKEY = data_file("badkey.pem")
NOKIACERT = data_file("nokia.pem")
NULLBYTECERT = data_file("nullbytecert.pem")
DHFILE = data_file("dh1024.pem")
BYTES_DHFILE = os.fsencode(DHFILE)
# Not defined in all versions of OpenSSL
OP_NO_COMPRESSION = getattr(ssl, "OP_NO_COMPRESSION", 0)
OP_SINGLE_DH_USE = getattr(ssl, "OP_SINGLE_DH_USE", 0)
OP_SINGLE_ECDH_USE = getattr(ssl, "OP_SINGLE_ECDH_USE", 0)
OP_CIPHER_SERVER_PREFERENCE = getattr(ssl, "OP_CIPHER_SERVER_PREFERENCE", 0)
OP_ENABLE_MIDDLEBOX_COMPAT = getattr(ssl, "OP_ENABLE_MIDDLEBOX_COMPAT", 0)
def handle_error(prefix):
exc_format = ' '.join(traceback.format_exception(*sys.exc_info()))
if support.verbose:
sys.stdout.write(prefix + exc_format)
def can_clear_options():
# 0.9.8m or higher
return ssl._OPENSSL_API_VERSION >= (0, 9, 8, 13, 15)
def no_sslv2_implies_sslv3_hello():
# 0.9.7h or higher
return ssl.OPENSSL_VERSION_INFO >= (0, 9, 7, 8, 15)
def have_verify_flags():
# 0.9.8 or higher
return ssl.OPENSSL_VERSION_INFO >= (0, 9, 8, 0, 15)
def _have_secp_curves():
if not ssl.HAS_ECDH:
return False
ctx = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
try:
ctx.set_ecdh_curve("secp384r1")
except ValueError:
return False
else:
return True
HAVE_SECP_CURVES = _have_secp_curves()
def utc_offset(): #NOTE: ignore issues like #1647654
# local time = utc time + utc offset
if time.daylight and time.localtime().tm_isdst > 0:
return -time.altzone # seconds
return -time.timezone
def asn1time(cert_time):
# Some versions of OpenSSL ignore seconds, see #18207
# 0.9.8.i
if ssl._OPENSSL_API_VERSION == (0, 9, 8, 9, 15):
fmt = "%b %d %H:%M:%S %Y GMT"
dt = datetime.datetime.strptime(cert_time, fmt)
dt = dt.replace(second=0)
cert_time = dt.strftime(fmt)
# %d adds leading zero but ASN1_TIME_print() uses leading space
if cert_time[4] == "0":
cert_time = cert_time[:4] + " " + cert_time[5:]
return cert_time
# Issue #9415: Ubuntu hijacks their OpenSSL and forcefully disables SSLv2
def skip_if_broken_ubuntu_ssl(func):
if hasattr(ssl, 'PROTOCOL_SSLv2'):
@functools.wraps(func)
def f(*args, **kwargs):
try:
ssl.SSLContext(ssl.PROTOCOL_SSLv2)
except ssl.SSLError:
if (ssl.OPENSSL_VERSION_INFO == (0, 9, 8, 15, 15) and
platform.linux_distribution() == ('debian', 'squeeze/sid', '')):
raise unittest.SkipTest("Patched Ubuntu OpenSSL breaks behaviour")
return func(*args, **kwargs)
return f
else:
return func
needs_sni = unittest.skipUnless(ssl.HAS_SNI, "SNI support needed for this test")
def test_wrap_socket(sock, ssl_version=ssl.PROTOCOL_TLS, *,
cert_reqs=ssl.CERT_NONE, ca_certs=None,
ciphers=None, certfile=None, keyfile=None,
**kwargs):
context = ssl.SSLContext(ssl_version)
if cert_reqs is not None:
if cert_reqs == ssl.CERT_NONE:
context.check_hostname = False
context.verify_mode = cert_reqs
if ca_certs is not None:
context.load_verify_locations(ca_certs)
if certfile is not None or keyfile is not None:
context.load_cert_chain(certfile, keyfile)
if ciphers is not None:
context.set_ciphers(ciphers)
return context.wrap_socket(sock, **kwargs)
def testing_context(server_cert=SIGNED_CERTFILE):
"""Create context
client_context, server_context, hostname = testing_context()
"""
if server_cert == SIGNED_CERTFILE:
hostname = SIGNED_CERTFILE_HOSTNAME
elif server_cert == SIGNED_CERTFILE2:
hostname = SIGNED_CERTFILE2_HOSTNAME
else:
raise ValueError(server_cert)
client_context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
client_context.load_verify_locations(SIGNING_CA)
server_context = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
server_context.load_cert_chain(server_cert)
client_context.load_verify_locations(SIGNING_CA)
return client_context, server_context, hostname
class BasicSocketTests(unittest.TestCase):
def test_constants(self):
ssl.CERT_NONE
ssl.CERT_OPTIONAL
ssl.CERT_REQUIRED
ssl.OP_CIPHER_SERVER_PREFERENCE
ssl.OP_SINGLE_DH_USE
if ssl.HAS_ECDH:
ssl.OP_SINGLE_ECDH_USE
if ssl.OPENSSL_VERSION_INFO >= (1, 0):
ssl.OP_NO_COMPRESSION
self.assertIn(ssl.HAS_SNI, {True, False})
self.assertIn(ssl.HAS_ECDH, {True, False})
ssl.OP_NO_SSLv2
ssl.OP_NO_SSLv3
ssl.OP_NO_TLSv1
ssl.OP_NO_TLSv1_3
if ssl.OPENSSL_VERSION_INFO >= (1, 0, 1):
ssl.OP_NO_TLSv1_1
ssl.OP_NO_TLSv1_2
self.assertEqual(ssl.PROTOCOL_TLS, ssl.PROTOCOL_SSLv23)
def test_private_init(self):
with self.assertRaisesRegex(TypeError, "public constructor"):
with socket.socket() as s:
ssl.SSLSocket(s)
def test_str_for_enums(self):
# Make sure that the PROTOCOL_* constants have enum-like string
# reprs.
proto = ssl.PROTOCOL_TLS
self.assertEqual(str(proto), '_SSLMethod.PROTOCOL_TLS')
ctx = ssl.SSLContext(proto)
self.assertIs(ctx.protocol, proto)
def test_random(self):
v = ssl.RAND_status()
if support.verbose:
sys.stdout.write("\n RAND_status is %d (%s)\n"
% (v, (v and "sufficient randomness") or
"insufficient randomness"))
data, is_cryptographic = ssl.RAND_pseudo_bytes(16)
self.assertEqual(len(data), 16)
self.assertEqual(is_cryptographic, v == 1)
if v:
data = ssl.RAND_bytes(16)
self.assertEqual(len(data), 16)
else:
self.assertRaises(ssl.SSLError, ssl.RAND_bytes, 16)
# negative num is invalid
self.assertRaises(ValueError, ssl.RAND_bytes, -5)
self.assertRaises(ValueError, ssl.RAND_pseudo_bytes, -5)
if hasattr(ssl, 'RAND_egd'):
self.assertRaises(TypeError, ssl.RAND_egd, 1)
self.assertRaises(TypeError, ssl.RAND_egd, 'foo', 1)
ssl.RAND_add("this is a random string", 75.0)
ssl.RAND_add(b"this is a random bytes object", 75.0)
ssl.RAND_add(bytearray(b"this is a random bytearray object"), 75.0)
@unittest.skipUnless(os.name == 'posix', 'requires posix')
def test_random_fork(self):
status = ssl.RAND_status()
if not status:
self.fail("OpenSSL's PRNG has insufficient randomness")
rfd, wfd = os.pipe()
pid = os.fork()
if pid == 0:
try:
os.close(rfd)
child_random = ssl.RAND_pseudo_bytes(16)[0]
self.assertEqual(len(child_random), 16)
os.write(wfd, child_random)
os.close(wfd)
except BaseException:
os._exit(1)
else:
os._exit(0)
else:
os.close(wfd)
self.addCleanup(os.close, rfd)
_, status = os.waitpid(pid, 0)
self.assertEqual(status, 0)
child_random = os.read(rfd, 16)
self.assertEqual(len(child_random), 16)
parent_random = ssl.RAND_pseudo_bytes(16)[0]
self.assertEqual(len(parent_random), 16)
self.assertNotEqual(child_random, parent_random)
def test_parse_cert(self):
# note that this uses an 'unofficial' function in _ssl.c,
# provided solely for this test, to exercise the certificate
# parsing code
self.assertEqual(
ssl._ssl._test_decode_cert(CERTFILE),
CERTFILE_INFO
)
self.assertEqual(
ssl._ssl._test_decode_cert(SIGNED_CERTFILE),
SIGNED_CERTFILE_INFO
)
# Issue #13034: the subjectAltName in some certificates
# (notably projects.developer.nokia.com:443) wasn't parsed
p = ssl._ssl._test_decode_cert(NOKIACERT)
if support.verbose:
sys.stdout.write("\n" + pprint.pformat(p) + "\n")
self.assertEqual(p['subjectAltName'],
(('DNS', 'projects.developer.nokia.com'),
('DNS', 'projects.forum.nokia.com'))
)
# extra OCSP and AIA fields
self.assertEqual(p['OCSP'], ('http://ocsp.verisign.com',))
self.assertEqual(p['caIssuers'],
('http://SVRIntl-G3-aia.verisign.com/SVRIntlG3.cer',))
self.assertEqual(p['crlDistributionPoints'],
('http://SVRIntl-G3-crl.verisign.com/SVRIntlG3.crl',))
def test_parse_cert_CVE_2013_4238(self):
p = ssl._ssl._test_decode_cert(NULLBYTECERT)
if support.verbose:
sys.stdout.write("\n" + pprint.pformat(p) + "\n")
subject = ((('countryName', 'US'),),
(('stateOrProvinceName', 'Oregon'),),
(('localityName', 'Beaverton'),),
(('organizationName', 'Python Software Foundation'),),
(('organizationalUnitName', 'Python Core Development'),),
(('commonName', 'null.python.org\x00example.org'),),
(('emailAddress', 'python-dev@python.org'),))
self.assertEqual(p['subject'], subject)
self.assertEqual(p['issuer'], subject)
if ssl._OPENSSL_API_VERSION >= (0, 9, 8):
san = (('DNS', 'altnull.python.org\x00example.com'),
('email', 'null@python.org\x00user@example.org'),
('URI', 'http://null.python.org\x00http://example.org'),
('IP Address', '192.0.2.1'),
('IP Address', '2001:DB8:0:0:0:0:0:1\n'))
else:
# OpenSSL 0.9.7 doesn't support IPv6 addresses in subjectAltName
san = (('DNS', 'altnull.python.org\x00example.com'),
('email', 'null@python.org\x00user@example.org'),
('URI', 'http://null.python.org\x00http://example.org'),
('IP Address', '192.0.2.1'),
('IP Address', '<invalid>'))
self.assertEqual(p['subjectAltName'], san)
def test_parse_all_sans(self):
p = ssl._ssl._test_decode_cert(ALLSANFILE)
self.assertEqual(p['subjectAltName'],
(
('DNS', 'allsans'),
('othername', '<unsupported>'),
('othername', '<unsupported>'),
('email', 'user@example.org'),
('DNS', 'www.example.org'),
('DirName',
((('countryName', 'XY'),),
(('localityName', 'Castle Anthrax'),),
(('organizationName', 'Python Software Foundation'),),
(('commonName', 'dirname example'),))),
('URI', 'https://www.python.org/'),
('IP Address', '127.0.0.1'),
('IP Address', '0:0:0:0:0:0:0:1\n'),
('Registered ID', '1.2.3.4.5')
)
)
def test_DER_to_PEM(self):
with open(CAFILE_CACERT, 'r') as f:
pem = f.read()
d1 = ssl.PEM_cert_to_DER_cert(pem)
p2 = ssl.DER_cert_to_PEM_cert(d1)
d2 = ssl.PEM_cert_to_DER_cert(p2)
self.assertEqual(d1, d2)
if not p2.startswith(ssl.PEM_HEADER + '\n'):
self.fail("DER-to-PEM didn't include correct header:\n%r\n" % p2)
if not p2.endswith('\n' + ssl.PEM_FOOTER + '\n'):
self.fail("DER-to-PEM didn't include correct footer:\n%r\n" % p2)
def test_openssl_version(self):
n = ssl.OPENSSL_VERSION_NUMBER
t = ssl.OPENSSL_VERSION_INFO
s = ssl.OPENSSL_VERSION
self.assertIsInstance(n, int)
self.assertIsInstance(t, tuple)
self.assertIsInstance(s, str)
# Some sanity checks follow
# >= 0.9
self.assertGreaterEqual(n, 0x900000)
# < 3.0
self.assertLess(n, 0x30000000)
major, minor, fix, patch, status = t
self.assertGreaterEqual(major, 0)
self.assertLess(major, 3)
self.assertGreaterEqual(minor, 0)
self.assertLess(minor, 256)
self.assertGreaterEqual(fix, 0)
self.assertLess(fix, 256)
self.assertGreaterEqual(patch, 0)
self.assertLessEqual(patch, 63)
self.assertGreaterEqual(status, 0)
self.assertLessEqual(status, 15)
# Version string as returned by {Open,Libre}SSL, the format might change
if IS_LIBRESSL:
self.assertTrue(s.startswith("LibreSSL {:d}".format(major)),
(s, t, hex(n)))
else:
self.assertTrue(s.startswith("OpenSSL {:d}.{:d}.{:d}".format(major, minor, fix)),
(s, t, hex(n)))
@support.cpython_only
def test_refcycle(self):
# Issue #7943: an SSL object doesn't create reference cycles with
# itself.
s = socket.socket(socket.AF_INET)
ss = test_wrap_socket(s)
wr = weakref.ref(ss)
with support.check_warnings(("", ResourceWarning)):
del ss
self.assertEqual(wr(), None)
def test_wrapped_unconnected(self):
# Methods on an unconnected SSLSocket propagate the original
# OSError raise by the underlying socket object.
s = socket.socket(socket.AF_INET)
with test_wrap_socket(s) as ss:
self.assertRaises(OSError, ss.recv, 1)
self.assertRaises(OSError, ss.recv_into, bytearray(b'x'))
self.assertRaises(OSError, ss.recvfrom, 1)
self.assertRaises(OSError, ss.recvfrom_into, bytearray(b'x'), 1)
self.assertRaises(OSError, ss.send, b'x')
self.assertRaises(OSError, ss.sendto, b'x', ('0.0.0.0', 0))
self.assertRaises(NotImplementedError, ss.sendmsg,
[b'x'], (), 0, ('0.0.0.0', 0))
def test_timeout(self):
# Issue #8524: when creating an SSL socket, the timeout of the
# original socket should be retained.
for timeout in (None, 0.0, 5.0):
s = socket.socket(socket.AF_INET)
s.settimeout(timeout)
with test_wrap_socket(s) as ss:
self.assertEqual(timeout, ss.gettimeout())
def test_errors_sslwrap(self):
sock = socket.socket()
self.assertRaisesRegex(ValueError,
"certfile must be specified",
ssl.wrap_socket, sock, keyfile=CERTFILE)
self.assertRaisesRegex(ValueError,
"certfile must be specified for server-side operations",
ssl.wrap_socket, sock, server_side=True)
self.assertRaisesRegex(ValueError,
"certfile must be specified for server-side operations",
ssl.wrap_socket, sock, server_side=True, certfile="")
with ssl.wrap_socket(sock, server_side=True, certfile=CERTFILE) as s:
self.assertRaisesRegex(ValueError, "can't connect in server-side mode",
s.connect, (HOST, 8080))
with self.assertRaises(OSError) as cm:
with socket.socket() as sock:
ssl.wrap_socket(sock, certfile=NONEXISTINGCERT)
self.assertEqual(cm.exception.errno, errno.ENOENT)
with self.assertRaises(OSError) as cm:
with socket.socket() as sock:
ssl.wrap_socket(sock,
certfile=CERTFILE, keyfile=NONEXISTINGCERT)
self.assertEqual(cm.exception.errno, errno.ENOENT)
with self.assertRaises(OSError) as cm:
with socket.socket() as sock:
ssl.wrap_socket(sock,
certfile=NONEXISTINGCERT, keyfile=NONEXISTINGCERT)
self.assertEqual(cm.exception.errno, errno.ENOENT)
def bad_cert_test(self, certfile):
"""Check that trying to use the given client certificate fails"""
certfile = os.path.join(os.path.dirname(__file__) or os.curdir,
certfile)
sock = socket.socket()
self.addCleanup(sock.close)
with self.assertRaises(ssl.SSLError):
test_wrap_socket(sock,
certfile=certfile)
def test_empty_cert(self):
"""Wrapping with an empty cert file"""
self.bad_cert_test("nullcert.pem")
def test_malformed_cert(self):
"""Wrapping with a badly formatted certificate (syntax error)"""
self.bad_cert_test("badcert.pem")
def test_malformed_key(self):
"""Wrapping with a badly formatted key (syntax error)"""
self.bad_cert_test("badkey.pem")
def test_match_hostname(self):
def ok(cert, hostname):
ssl.match_hostname(cert, hostname)
def fail(cert, hostname):
self.assertRaises(ssl.CertificateError,
ssl.match_hostname, cert, hostname)
# -- Hostname matching --
cert = {'subject': ((('commonName', 'example.com'),),)}
ok(cert, 'example.com')
ok(cert, 'ExAmple.cOm')
fail(cert, 'www.example.com')
fail(cert, '.example.com')
fail(cert, 'example.org')
fail(cert, 'exampleXcom')
cert = {'subject': ((('commonName', '*.a.com'),),)}
ok(cert, 'foo.a.com')
fail(cert, 'bar.foo.a.com')
fail(cert, 'a.com')
fail(cert, 'Xa.com')
fail(cert, '.a.com')
# only match wildcards when they are the only thing
# in left-most segment
cert = {'subject': ((('commonName', 'f*.com'),),)}
fail(cert, 'foo.com')
fail(cert, 'f.com')
fail(cert, 'bar.com')
fail(cert, 'foo.a.com')
fail(cert, 'bar.foo.com')
# NULL bytes are bad, CVE-2013-4073
cert = {'subject': ((('commonName',
'null.python.org\x00example.org'),),)}
ok(cert, 'null.python.org\x00example.org') # or raise an error?
fail(cert, 'example.org')
fail(cert, 'null.python.org')
# error cases with wildcards
cert = {'subject': ((('commonName', '*.*.a.com'),),)}
fail(cert, 'bar.foo.a.com')
fail(cert, 'a.com')
fail(cert, 'Xa.com')
fail(cert, '.a.com')
cert = {'subject': ((('commonName', 'a.*.com'),),)}
fail(cert, 'a.foo.com')
fail(cert, 'a..com')
fail(cert, 'a.com')
# wildcard doesn't match IDNA prefix 'xn--'
idna = 'püthon.python.org'.encode("idna").decode("ascii")
cert = {'subject': ((('commonName', idna),),)}
ok(cert, idna)
cert = {'subject': ((('commonName', 'x*.python.org'),),)}
fail(cert, idna)
cert = {'subject': ((('commonName', 'xn--p*.python.org'),),)}
fail(cert, idna)
# wildcard in first fragment and IDNA A-labels in sequent fragments
# are supported.
idna = 'www*.pythön.org'.encode("idna").decode("ascii")
cert = {'subject': ((('commonName', idna),),)}
fail(cert, 'www.pythön.org'.encode("idna").decode("ascii"))
fail(cert, 'www1.pythön.org'.encode("idna").decode("ascii"))
fail(cert, 'ftp.pythön.org'.encode("idna").decode("ascii"))
fail(cert, 'pythön.org'.encode("idna").decode("ascii"))
# Slightly fake real-world example
cert = {'notAfter': 'Jun 26 21:41:46 2011 GMT',
'subject': ((('commonName', 'linuxfrz.org'),),),
'subjectAltName': (('DNS', 'linuxfr.org'),
('DNS', 'linuxfr.com'),
('othername', '<unsupported>'))}
ok(cert, 'linuxfr.org')
ok(cert, 'linuxfr.com')
# Not a "DNS" entry
fail(cert, '<unsupported>')
# When there is a subjectAltName, commonName isn't used
fail(cert, 'linuxfrz.org')
# A pristine real-world example
cert = {'notAfter': 'Dec 18 23:59:59 2011 GMT',
'subject': ((('countryName', 'US'),),
(('stateOrProvinceName', 'California'),),
(('localityName', 'Mountain View'),),
(('organizationName', 'Google Inc'),),
(('commonName', 'mail.google.com'),))}
ok(cert, 'mail.google.com')
fail(cert, 'gmail.com')
# Only commonName is considered
fail(cert, 'California')
# -- IPv4 matching --
cert = {'subject': ((('commonName', 'example.com'),),),
'subjectAltName': (('DNS', 'example.com'),
('IP Address', '10.11.12.13'),
('IP Address', '14.15.16.17'))}
ok(cert, '10.11.12.13')
ok(cert, '14.15.16.17')
fail(cert, '14.15.16.18')
fail(cert, 'example.net')
# -- IPv6 matching --
if hasattr(socket, 'AF_INET6'):
cert = {'subject': ((('commonName', 'example.com'),),),
'subjectAltName': (
('DNS', 'example.com'),
('IP Address', '2001:0:0:0:0:0:0:CAFE\n'),
('IP Address', '2003:0:0:0:0:0:0:BABA\n'))}
ok(cert, '2001::cafe')
ok(cert, '2003::baba')
fail(cert, '2003::bebe')
fail(cert, 'example.net')
# -- Miscellaneous --
# Neither commonName nor subjectAltName
cert = {'notAfter': 'Dec 18 23:59:59 2011 GMT',
'subject': ((('countryName', 'US'),),
(('stateOrProvinceName', 'California'),),
(('localityName', 'Mountain View'),),
(('organizationName', 'Google Inc'),))}
fail(cert, 'mail.google.com')
# No DNS entry in subjectAltName but a commonName
cert = {'notAfter': 'Dec 18 23:59:59 2099 GMT',
'subject': ((('countryName', 'US'),),
(('stateOrProvinceName', 'California'),),
(('localityName', 'Mountain View'),),
(('commonName', 'mail.google.com'),)),
'subjectAltName': (('othername', 'blabla'), )}
ok(cert, 'mail.google.com')
# No DNS entry subjectAltName and no commonName
cert = {'notAfter': 'Dec 18 23:59:59 2099 GMT',
'subject': ((('countryName', 'US'),),
(('stateOrProvinceName', 'California'),),
(('localityName', 'Mountain View'),),
(('organizationName', 'Google Inc'),)),
'subjectAltName': (('othername', 'blabla'),)}
fail(cert, 'google.com')
# Empty cert / no cert
self.assertRaises(ValueError, ssl.match_hostname, None, 'example.com')
self.assertRaises(ValueError, ssl.match_hostname, {}, 'example.com')
# Issue #17980: avoid denials of service by refusing more than one
# wildcard per fragment.
cert = {'subject': ((('commonName', 'a*b.example.com'),),)}
with self.assertRaisesRegex(
ssl.CertificateError,
"partial wildcards in leftmost label are not supported"):
ssl.match_hostname(cert, 'axxb.example.com')
cert = {'subject': ((('commonName', 'www.*.example.com'),),)}
with self.assertRaisesRegex(
ssl.CertificateError,
"wildcard can only be present in the leftmost label"):
ssl.match_hostname(cert, 'www.sub.example.com')
cert = {'subject': ((('commonName', 'a*b*.example.com'),),)}
with self.assertRaisesRegex(
ssl.CertificateError,
"too many wildcards"):
ssl.match_hostname(cert, 'axxbxxc.example.com')
cert = {'subject': ((('commonName', '*'),),)}
with self.assertRaisesRegex(
ssl.CertificateError,
"sole wildcard without additional labels are not support"):
ssl.match_hostname(cert, 'host')
cert = {'subject': ((('commonName', '*.com'),),)}
with self.assertRaisesRegex(
ssl.CertificateError,
r"hostname 'com' doesn't match '\*.com'"):
ssl.match_hostname(cert, 'com')
# extra checks for _inet_paton()
for invalid in ['1', '', '1.2.3', '256.0.0.1', '127.0.0.1/24']:
with self.assertRaises(ValueError):
ssl._inet_paton(invalid)
for ipaddr in ['127.0.0.1', '192.168.0.1']:
self.assertTrue(ssl._inet_paton(ipaddr))
if hasattr(socket, 'AF_INET6'):
for ipaddr in ['::1', '2001:db8:85a3::8a2e:370:7334']:
self.assertTrue(ssl._inet_paton(ipaddr))
def test_server_side(self):
# server_hostname doesn't work for server sockets
ctx = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
with socket.socket() as sock:
self.assertRaises(ValueError, ctx.wrap_socket, sock, True,
server_hostname="some.hostname")
def test_unknown_channel_binding(self):
# should raise ValueError for unknown type
s = socket.socket(socket.AF_INET)
s.bind(('127.0.0.1', 0))
s.listen()
c = socket.socket(socket.AF_INET)
c.connect(s.getsockname())
with test_wrap_socket(c, do_handshake_on_connect=False) as ss:
with self.assertRaises(ValueError):
ss.get_channel_binding("unknown-type")
s.close()
@unittest.skipUnless("tls-unique" in ssl.CHANNEL_BINDING_TYPES,
"'tls-unique' channel binding not available")
def test_tls_unique_channel_binding(self):
# unconnected should return None for known type
s = socket.socket(socket.AF_INET)
with test_wrap_socket(s) as ss:
self.assertIsNone(ss.get_channel_binding("tls-unique"))
# the same for server-side
s = socket.socket(socket.AF_INET)
with test_wrap_socket(s, server_side=True, certfile=CERTFILE) as ss:
self.assertIsNone(ss.get_channel_binding("tls-unique"))
def test_dealloc_warn(self):
ss = test_wrap_socket(socket.socket(socket.AF_INET))
r = repr(ss)
with self.assertWarns(ResourceWarning) as cm:
ss = None
support.gc_collect()
self.assertIn(r, str(cm.warning.args[0]))
def test_get_default_verify_paths(self):
paths = ssl.get_default_verify_paths()
self.assertEqual(len(paths), 6)
self.assertIsInstance(paths, ssl.DefaultVerifyPaths)
with support.EnvironmentVarGuard() as env:
env["SSL_CERT_DIR"] = CAPATH
env["SSL_CERT_FILE"] = CERTFILE
paths = ssl.get_default_verify_paths()
self.assertEqual(paths.cafile, CERTFILE)
self.assertEqual(paths.capath, CAPATH)
@unittest.skipUnless(sys.platform == "win32", "Windows specific")
def test_enum_certificates(self):
self.assertTrue(ssl.enum_certificates("CA"))
self.assertTrue(ssl.enum_certificates("ROOT"))
self.assertRaises(TypeError, ssl.enum_certificates)
self.assertRaises(WindowsError, ssl.enum_certificates, "")
trust_oids = set()
for storename in ("CA", "ROOT"):
store = ssl.enum_certificates(storename)
self.assertIsInstance(store, list)
for element in store:
self.assertIsInstance(element, tuple)
self.assertEqual(len(element), 3)
cert, enc, trust = element
self.assertIsInstance(cert, bytes)
self.assertIn(enc, {"x509_asn", "pkcs_7_asn"})
self.assertIsInstance(trust, (set, bool))
if isinstance(trust, set):
trust_oids.update(trust)
serverAuth = "1.3.6.1.5.5.7.3.1"
self.assertIn(serverAuth, trust_oids)
@unittest.skipUnless(sys.platform == "win32", "Windows specific")
def test_enum_crls(self):
self.assertTrue(ssl.enum_crls("CA"))
self.assertRaises(TypeError, ssl.enum_crls)
self.assertRaises(WindowsError, ssl.enum_crls, "")
crls = ssl.enum_crls("CA")
self.assertIsInstance(crls, list)
for element in crls:
self.assertIsInstance(element, tuple)
self.assertEqual(len(element), 2)
self.assertIsInstance(element[0], bytes)
self.assertIn(element[1], {"x509_asn", "pkcs_7_asn"})
def test_asn1object(self):
expected = (129, 'serverAuth', 'TLS Web Server Authentication',
'1.3.6.1.5.5.7.3.1')
val = ssl._ASN1Object('1.3.6.1.5.5.7.3.1')
self.assertEqual(val, expected)
self.assertEqual(val.nid, 129)
self.assertEqual(val.shortname, 'serverAuth')
self.assertEqual(val.longname, 'TLS Web Server Authentication')
self.assertEqual(val.oid, '1.3.6.1.5.5.7.3.1')
self.assertIsInstance(val, ssl._ASN1Object)
self.assertRaises(ValueError, ssl._ASN1Object, 'serverAuth')
val = ssl._ASN1Object.fromnid(129)
self.assertEqual(val, expected)
self.assertIsInstance(val, ssl._ASN1Object)
self.assertRaises(ValueError, ssl._ASN1Object.fromnid, -1)
with self.assertRaisesRegex(ValueError, "unknown NID 100000"):
ssl._ASN1Object.fromnid(100000)
for i in range(1000):
try:
obj = ssl._ASN1Object.fromnid(i)
except ValueError:
pass
else:
self.assertIsInstance(obj.nid, int)
self.assertIsInstance(obj.shortname, str)
self.assertIsInstance(obj.longname, str)
self.assertIsInstance(obj.oid, (str, type(None)))
val = ssl._ASN1Object.fromname('TLS Web Server Authentication')
self.assertEqual(val, expected)
self.assertIsInstance(val, ssl._ASN1Object)
self.assertEqual(ssl._ASN1Object.fromname('serverAuth'), expected)
self.assertEqual(ssl._ASN1Object.fromname('1.3.6.1.5.5.7.3.1'),
expected)
with self.assertRaisesRegex(ValueError, "unknown object 'serverauth'"):
ssl._ASN1Object.fromname('serverauth')
def test_purpose_enum(self):
val = ssl._ASN1Object('1.3.6.1.5.5.7.3.1')
self.assertIsInstance(ssl.Purpose.SERVER_AUTH, ssl._ASN1Object)
self.assertEqual(ssl.Purpose.SERVER_AUTH, val)
self.assertEqual(ssl.Purpose.SERVER_AUTH.nid, 129)
self.assertEqual(ssl.Purpose.SERVER_AUTH.shortname, 'serverAuth')
self.assertEqual(ssl.Purpose.SERVER_AUTH.oid,
'1.3.6.1.5.5.7.3.1')
val = ssl._ASN1Object('1.3.6.1.5.5.7.3.2')
self.assertIsInstance(ssl.Purpose.CLIENT_AUTH, ssl._ASN1Object)
self.assertEqual(ssl.Purpose.CLIENT_AUTH, val)
self.assertEqual(ssl.Purpose.CLIENT_AUTH.nid, 130)
self.assertEqual(ssl.Purpose.CLIENT_AUTH.shortname, 'clientAuth')
self.assertEqual(ssl.Purpose.CLIENT_AUTH.oid,
'1.3.6.1.5.5.7.3.2')
def test_unsupported_dtls(self):
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
self.addCleanup(s.close)
with self.assertRaises(NotImplementedError) as cx:
test_wrap_socket(s, cert_reqs=ssl.CERT_NONE)
self.assertEqual(str(cx.exception), "only stream sockets are supported")
ctx = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
with self.assertRaises(NotImplementedError) as cx:
ctx.wrap_socket(s)
self.assertEqual(str(cx.exception), "only stream sockets are supported")
def cert_time_ok(self, timestring, timestamp):
self.assertEqual(ssl.cert_time_to_seconds(timestring), timestamp)
def cert_time_fail(self, timestring):
with self.assertRaises(ValueError):
ssl.cert_time_to_seconds(timestring)
@unittest.skipUnless(utc_offset(),
'local time needs to be different from UTC')
def test_cert_time_to_seconds_timezone(self):
# Issue #19940: ssl.cert_time_to_seconds() returns wrong
# results if local timezone is not UTC
self.cert_time_ok("May 9 00:00:00 2007 GMT", 1178668800.0)
self.cert_time_ok("Jan 5 09:34:43 2018 GMT", 1515144883.0)
def test_cert_time_to_seconds(self):
timestring = "Jan 5 09:34:43 2018 GMT"
ts = 1515144883.0
self.cert_time_ok(timestring, ts)
# accept keyword parameter, assert its name
self.assertEqual(ssl.cert_time_to_seconds(cert_time=timestring), ts)
# accept both %e and %d (space or zero generated by strftime)
self.cert_time_ok("Jan 05 09:34:43 2018 GMT", ts)
# case-insensitive
self.cert_time_ok("JaN 5 09:34:43 2018 GmT", ts)
self.cert_time_fail("Jan 5 09:34 2018 GMT") # no seconds
self.cert_time_fail("Jan 5 09:34:43 2018") # no GMT
self.cert_time_fail("Jan 5 09:34:43 2018 UTC") # not GMT timezone
self.cert_time_fail("Jan 35 09:34:43 2018 GMT") # invalid day
self.cert_time_fail("Jon 5 09:34:43 2018 GMT") # invalid month
self.cert_time_fail("Jan 5 24:00:00 2018 GMT") # invalid hour
self.cert_time_fail("Jan 5 09:60:43 2018 GMT") # invalid minute
newyear_ts = 1230768000.0
# leap seconds
self.cert_time_ok("Dec 31 23:59:60 2008 GMT", newyear_ts)
# same timestamp
self.cert_time_ok("Jan 1 00:00:00 2009 GMT", newyear_ts)
self.cert_time_ok("Jan 5 09:34:59 2018 GMT", 1515144899)
# allow 60th second (even if it is not a leap second)
self.cert_time_ok("Jan 5 09:34:60 2018 GMT", 1515144900)
# allow 2nd leap second for compatibility with time.strptime()
self.cert_time_ok("Jan 5 09:34:61 2018 GMT", 1515144901)
self.cert_time_fail("Jan 5 09:34:62 2018 GMT") # invalid seconds
# no special treatment for the special value:
# 99991231235959Z (rfc 5280)
self.cert_time_ok("Dec 31 23:59:59 9999 GMT", 253402300799.0)
@support.run_with_locale('LC_ALL', '')
def test_cert_time_to_seconds_locale(self):
# `cert_time_to_seconds()` should be locale independent
def local_february_name():
return time.strftime('%b', (1, 2, 3, 4, 5, 6, 0, 0, 0))
if local_february_name().lower() == 'feb':
self.skipTest("locale-specific month name needs to be "
"different from C locale")
# locale-independent
self.cert_time_ok("Feb 9 00:00:00 2007 GMT", 1170979200.0)
self.cert_time_fail(local_february_name() + " 9 00:00:00 2007 GMT")
def test_connect_ex_error(self):
server = socket.socket(socket.AF_INET)
self.addCleanup(server.close)
port = support.bind_port(server) # Reserve port but don't listen
s = test_wrap_socket(socket.socket(socket.AF_INET),
cert_reqs=ssl.CERT_REQUIRED)
self.addCleanup(s.close)
rc = s.connect_ex((HOST, port))
# Issue #19919: Windows machines or VMs hosted on Windows
# machines sometimes return EWOULDBLOCK.
errors = (
errno.ECONNREFUSED, errno.EHOSTUNREACH, errno.ETIMEDOUT,
errno.EWOULDBLOCK,
)
self.assertIn(rc, errors)
class ContextTests(unittest.TestCase):
@skip_if_broken_ubuntu_ssl
def test_constructor(self):
for protocol in PROTOCOLS:
ssl.SSLContext(protocol)
ctx = ssl.SSLContext()
self.assertEqual(ctx.protocol, ssl.PROTOCOL_TLS)
self.assertRaises(ValueError, ssl.SSLContext, -1)
self.assertRaises(ValueError, ssl.SSLContext, 42)
@skip_if_broken_ubuntu_ssl
def test_protocol(self):
for proto in PROTOCOLS:
ctx = ssl.SSLContext(proto)
self.assertEqual(ctx.protocol, proto)
def test_ciphers(self):
ctx = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
ctx.set_ciphers("ALL")
ctx.set_ciphers("DEFAULT")
with self.assertRaisesRegex(ssl.SSLError, "No cipher can be selected"):
ctx.set_ciphers("^$:,;?*'dorothyx")
@unittest.skipUnless(PY_SSL_DEFAULT_CIPHERS == 1,