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# -*- coding: utf-8 -*-
import os
import mock
import pytest
try:
from cryptography import x509
from OpenSSL.crypto import FILETYPE_PEM, load_certificate
from urllib3.contrib.pyopenssl import _dnsname_to_stdlib, get_subj_alt_name
except ImportError:
pass
def setup_module():
try:
from urllib3.contrib.pyopenssl import inject_into_urllib3
inject_into_urllib3()
except ImportError as e:
pytest.skip("Could not import PyOpenSSL: %r" % e)
def teardown_module():
try:
from urllib3.contrib.pyopenssl import extract_from_urllib3
extract_from_urllib3()
except ImportError:
pass
from ..test_util import TestUtilSSL # noqa: E402, F401
from ..with_dummyserver.test_https import ( # noqa: E402, F401
TestHTTPS,
TestHTTPS_IPV4SAN,
TestHTTPS_IPv6Addr,
TestHTTPS_IPV6SAN,
TestHTTPS_NoSAN,
TestHTTPS_TLSv1,
TestHTTPS_TLSv1_1,
TestHTTPS_TLSv1_2,
TestHTTPS_TLSv1_3,
)
from ..with_dummyserver.test_socketlevel import ( # noqa: E402, F401
TestClientCerts,
TestSNI,
TestSocketClosing,
TestSSL,
)
class TestPyOpenSSLHelpers(object):
"""
Tests for PyOpenSSL helper functions.
"""
def test_dnsname_to_stdlib_simple(self):
"""
We can convert a dnsname to a native string when the domain is simple.
"""
name = u"उदाहरण.परीक"
expected_result = "xn--p1b6ci4b4b3a.xn--11b5bs8d"
assert _dnsname_to_stdlib(name) == expected_result
def test_dnsname_to_stdlib_leading_period(self):
"""
If there is a . in front of the domain name we correctly encode it.
"""
name = u".उदाहरण.परीक"
expected_result = ".xn--p1b6ci4b4b3a.xn--11b5bs8d"
assert _dnsname_to_stdlib(name) == expected_result
def test_dnsname_to_stdlib_leading_splat(self):
"""
If there's a wildcard character in the front of the string we handle it
appropriately.
"""
name = u"*.उदाहरण.परीक"
expected_result = "*.xn--p1b6ci4b4b3a.xn--11b5bs8d"
assert _dnsname_to_stdlib(name) == expected_result
@mock.patch("urllib3.contrib.pyopenssl.log.warning")
def test_get_subj_alt_name(self, mock_warning):
"""
If a certificate has two subject alternative names, cryptography raises
an x509.DuplicateExtension exception.
"""
path = os.path.join(os.path.dirname(__file__), "duplicate_san.pem")
with open(path, "r") as fp:
cert = load_certificate(FILETYPE_PEM, fp.read())
assert get_subj_alt_name(cert) == []
assert mock_warning.call_count == 1
assert isinstance(mock_warning.call_args[0][1], x509.DuplicateExtension)
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