/usr/share/pyshared/txaws/client/tests/test_ssl.py is in python-txaws 0.2.3-1ubuntu1.
This file is owned by root:root, with mode 0o644.
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import tempfile
from OpenSSL.crypto import dump_certificate, load_certificate, FILETYPE_PEM
from OpenSSL.SSL import Error as SSLError
from OpenSSL.version import __version__ as pyopenssl_version
from twisted.internet import reactor
from twisted.internet.ssl import DefaultOpenSSLContextFactory
from twisted.protocols.policies import WrappingFactory
from twisted.python import log
from twisted.python.filepath import FilePath
from twisted.test.test_sslverify import makeCertificate
from twisted.web import server, static
from txaws import exception
from txaws.client import ssl
from txaws.client.base import BaseQuery
from txaws.service import AWSServiceEndpoint
from txaws.testing.base import TXAWSTestCase
def sibpath(path):
return os.path.join(os.path.dirname(__file__), path)
PRIVKEY = sibpath("private.ssl")
PUBKEY = sibpath("public.ssl")
BADPRIVKEY = sibpath("badprivate.ssl")
BADPUBKEY = sibpath("badpublic.ssl")
PRIVSANKEY = sibpath("private_san.ssl")
PUBSANKEY = sibpath("public_san.ssl")
class BaseQuerySSLTestCase(TXAWSTestCase):
def setUp(self):
self.cleanupServerConnections = 0
name = self.mktemp()
os.mkdir(name)
FilePath(name).child("file").setContent("0123456789")
r = static.File(name)
self.site = server.Site(r, timeout=None)
self.wrapper = WrappingFactory(self.site)
pub_key = file(PUBKEY)
pub_key_data = pub_key.read()
pub_key.close()
pub_key_san = file(PUBSANKEY)
pub_key_san_data = pub_key_san.read()
pub_key_san.close()
ssl._ca_certs = [load_certificate(FILETYPE_PEM, pub_key_data),
load_certificate(FILETYPE_PEM, pub_key_san_data)]
def tearDown(self):
ssl._ca_certs = None
# If the test indicated it might leave some server-side connections
# around, clean them up.
connections = self.wrapper.protocols.keys()
# If there are fewer server-side connections than requested,
# that's okay. Some might have noticed that the client closed
# the connection and cleaned up after themselves.
for n in range(min(len(connections), self.cleanupServerConnections)):
proto = connections.pop()
log.msg("Closing %r" % (proto,))
proto.transport.loseConnection()
if connections:
log.msg("Some left-over connections; this test is probably buggy.")
return self.port.stopListening()
def _get_url(self, path):
return "https://localhost:%d/%s" % (self.portno, path)
def test_ssl_verification_positive(self):
"""
The L{VerifyingContextFactory} properly allows to connect to the
endpoint if the certificates match.
"""
context_factory = DefaultOpenSSLContextFactory(PRIVKEY, PUBKEY)
self.port = reactor.listenSSL(
0, self.site, context_factory, interface="127.0.0.1")
self.portno = self.port.getHost().port
endpoint = AWSServiceEndpoint(ssl_hostname_verification=True)
query = BaseQuery("an action", "creds", endpoint)
d = query.get_page(self._get_url("file"))
return d.addCallback(self.assertEquals, "0123456789")
def test_ssl_verification_negative(self):
"""
The L{VerifyingContextFactory} fails with a SSL error the certificates
can't be checked.
"""
context_factory = DefaultOpenSSLContextFactory(BADPRIVKEY, BADPUBKEY)
self.port = reactor.listenSSL(
0, self.site, context_factory, interface="127.0.0.1")
self.portno = self.port.getHost().port
endpoint = AWSServiceEndpoint(ssl_hostname_verification=True)
query = BaseQuery("an action", "creds", endpoint)
d = query.get_page(self._get_url("file"))
return self.assertFailure(d, SSLError)
def test_ssl_verification_bypassed(self):
"""
L{BaseQuery} doesn't use L{VerifyingContextFactory}
if C{ssl_hostname_verification} is C{False}, thus allowing to connect
to non-secure endpoints.
"""
context_factory = DefaultOpenSSLContextFactory(BADPRIVKEY, BADPUBKEY)
self.port = reactor.listenSSL(
0, self.site, context_factory, interface="127.0.0.1")
self.portno = self.port.getHost().port
endpoint = AWSServiceEndpoint(ssl_hostname_verification=False)
query = BaseQuery("an action", "creds", endpoint)
d = query.get_page(self._get_url("file"))
return d.addCallback(self.assertEquals, "0123456789")
def test_ssl_subject_alt_name(self):
"""
L{VerifyingContextFactory} supports checking C{subjectAltName} in the
certificate if it's available.
"""
context_factory = DefaultOpenSSLContextFactory(PRIVSANKEY, PUBSANKEY)
self.port = reactor.listenSSL(
0, self.site, context_factory, interface="127.0.0.1")
self.portno = self.port.getHost().port
endpoint = AWSServiceEndpoint(ssl_hostname_verification=True)
query = BaseQuery("an action", "creds", endpoint)
d = query.get_page("https://127.0.0.1:%d/file" % (self.portno,))
return d.addCallback(self.assertEquals, "0123456789")
if pyopenssl_version < "0.12":
test_ssl_subject_alt_name.skip = (
"subjectAltName not supported by older PyOpenSSL")
class CertsFilesTestCase(TXAWSTestCase):
def setUp(self):
super(CertsFilesTestCase, self).setUp()
# set up temp dir with no certs
self.no_certs_dir = tempfile.mkdtemp()
# create certs
cert1 = makeCertificate(O="Server Certificate 1", CN="cn1")
cert2 = makeCertificate(O="Server Certificate 2", CN="cn2")
cert3 = makeCertificate(O="Server Certificate 3", CN="cn3")
# set up temp dir with one cert
self.one_cert_dir = tempfile.mkdtemp()
self.cert1 = self._write_pem(cert1, self.one_cert_dir, "cert1.pem")
# set up temp dir with two certs
self.two_certs_dir = tempfile.mkdtemp()
self.cert2 = self._write_pem(cert2, self.two_certs_dir, "cert2.pem")
self.cert3 = self._write_pem(cert3, self.two_certs_dir, "cert3.pem")
def tearDown(self):
super(CertsFilesTestCase, self).tearDown()
os.unlink(self.cert1)
os.unlink(self.cert2)
os.unlink(self.cert3)
os.removedirs(self.no_certs_dir)
os.removedirs(self.one_cert_dir)
os.removedirs(self.two_certs_dir)
def _write_pem(self, cert, dir, filename):
data = dump_certificate(FILETYPE_PEM, cert[1])
full_path = os.path.join(dir, filename)
fh = open(full_path, "w")
fh.write(data)
fh.close()
return full_path
def test_get_ca_certs_no_certs(self):
os.environ["TXAWS_CERTS_PATH"] = self.no_certs_dir
self.patch(ssl, "DEFAULT_CERTS_PATH", self.no_certs_dir)
self.assertRaises(exception.CertsNotFoundError, ssl.get_ca_certs)
def test_get_ca_certs_with_default_path(self):
self.patch(ssl, "DEFAULT_CERTS_PATH", self.two_certs_dir)
certs = ssl.get_ca_certs()
self.assertEqual(len(certs), 2)
def test_get_ca_certs_with_env_path(self):
os.environ["TXAWS_CERTS_PATH"] = self.one_cert_dir
certs = ssl.get_ca_certs()
self.assertEqual(len(certs), 1)
def test_get_ca_certs_multiple_paths(self):
os.environ["TXAWS_CERTS_PATH"] = "%s:%s" % (
self.one_cert_dir, self.two_certs_dir)
certs = ssl.get_ca_certs()
self.assertEqual(len(certs), 3)
def test_get_ca_certs_one_empty_path(self):
os.environ["TXAWS_CERTS_PATH"] = "%s:%s" % (
self.no_certs_dir, self.one_cert_dir)
certs = ssl.get_ca_certs()
self.assertEqual(len(certs), 1)
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