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|
# coding: utf-8
from __future__ import unicode_literals, division, absolute_import, print_function
import unittest
import sys
import os
import re
import threading
import platform
import time
import socket
from oscrypto import tls, errors, backend
from oscrypto._tls import parse_tls_records, parse_handshake_messages
from asn1crypto import x509
from .unittest_data import data_decorator, data
from .exception_context import assert_exception
from ._unittest_compat import patch
from ._https_client import HttpsClient
from ._socket_proxy import make_socket_proxy
from ._socket_server import make_socket_server
if sys.version_info < (3,):
import thread
else:
import _thread as thread
patch()
if sys.version_info < (3,):
str_cls = unicode # noqa
byte_cls = str
else:
str_cls = str
byte_cls = bytes
_backend = backend()
xp = sys.platform == 'win32' and sys.getwindowsversion()[0] < 6
tests_root = os.path.dirname(__file__)
fixtures_dir = os.path.join(tests_root, 'fixtures')
digicert_ca_path = os.path.join(fixtures_dir, 'digicert_ca.crt')
badtls_ca_path = os.path.join(fixtures_dir, 'badtls.io_ca.crt')
# PyPy <= 5.6.0 on OS X 10.11 has a bug with _get_clocktime
osx_pypy_bug = platform.python_implementation() == 'PyPy' \
and sys.platform == 'darwin' \
and tuple(map(int, platform.mac_ver()[0].split('.'))) < (10, 12)
raise_with = None
if sys.version_info < (3,):
exec('''
def raise_with(e, tb):
raise e, None, tb
''')
else:
exec('''
def raise_with(e, tb):
e.__traceback__ = tb
raise e from None
''')
def connection_timeout(timeout=30):
def timeout_decorator(f):
def wrapped(*args):
try:
if not osx_pypy_bug:
t = threading.Timer(timeout, lambda: thread.interrupt_main())
t.start()
f(*args)
except (KeyboardInterrupt):
raise_with(AssertionError("Timed out"), sys.exc_info()[2])
finally:
if not osx_pypy_bug:
t.cancel()
return wrapped
return timeout_decorator
@data_decorator
class TLSTests(unittest.TestCase):
@staticmethod
def tls_hosts():
return (
('google', 'www.google.com', 443),
('package_control', 'packagecontrol.io', 443),
('dh1024', 'dh1024.badtls.io', 10005),
)
@data('tls_hosts', True)
@connection_timeout()
def tls_connect(self, hostname, port):
session = None
if hostname == 'dh1024.badtls.io':
session = tls.TLSSession(extra_trust_roots=[badtls_ca_path])
connection = tls.TLSSocket(hostname, port, session=session)
self.assertEqual(hostname, connection.hostname)
self.assertIsInstance(connection.hostname, str_cls)
self.assertIsInstance(connection.cipher_suite, str_cls)
self.assertIsInstance(connection.certificate, x509.Certificate)
self.assertLess(10, len(connection.cipher_suite))
self.assertEqual(port, connection.port)
connection.write(b'GET / HTTP/1.1\r\nHost: ' + hostname.encode('utf-8') + b'\r\n\r\n')
html = connection.read_until(re.compile(b'</html>', re.I))
self.assertNotEqual(None, re.search(b'</html>', html, re.I))
@connection_timeout()
def test_tls_connect_revoked(self):
if _backend == 'mac':
from oscrypto._mac._security import osx_version_info
# macOS 10.12 will read the OCSP Staple response and raise a revoked
# error, even though we have revocation checking disabled
if osx_version_info >= (10, 12):
with assert_exception(self, errors.TLSError, 'revoked'):
tls.TLSSocket('global-root-ca-revoked.chain-demos.digicert.com', 443)
return
tls.TLSSocket('global-root-ca-revoked.chain-demos.digicert.com', 443)
@connection_timeout()
def test_tls_error_http(self):
with assert_exception(self, errors.TLSError, 'server responded using HTTP'):
tls.TLSSocket('www.google.com', 80)
@connection_timeout()
def test_tls_error_ftp(self):
s = None
try:
def_timeout = socket.getdefaulttimeout()
socket.setdefaulttimeout(5)
s = make_socket_server(18021, lambda s, d: s.send(b'220 Welcome to FooFTP\n'))
with assert_exception(self, errors.TLSError, 'remote end closed the connection|server responded using FTP'):
tls.TLSSocket('localhost', 18021)
finally:
if s:
s.close()
socket.setdefaulttimeout(def_timeout)
@connection_timeout()
def test_tls_error_missing_issuer(self):
expected = 'certificate issuer not found in trusted root certificate store'
with assert_exception(self, errors.TLSVerificationError, expected):
tls.TLSSocket('domain-match.badtls.io', 10000)
@connection_timeout()
def test_tls_error_domain_mismatch(self):
session = tls.TLSSession(extra_trust_roots=[badtls_ca_path])
with assert_exception(self, errors.TLSVerificationError, 'does not match'):
tls.TLSSocket('domain-mismatch.badtls.io', 11002, session=session)
@connection_timeout()
def test_tls_error_san_mismatch(self):
session = tls.TLSSession(extra_trust_roots=[badtls_ca_path])
with assert_exception(self, errors.TLSVerificationError, 'does not match'):
tls.TLSSocket('san-mismatch.badtls.io', 11003, session=session)
@connection_timeout()
def test_tls_wildcard_success(self):
session = tls.TLSSession(extra_trust_roots=[badtls_ca_path])
tls.TLSSocket('wildcard-match.badtls.io', 10001, session=session)
@connection_timeout()
def test_tls_error_not_yet_valid(self):
session = tls.TLSSession(extra_trust_roots=[badtls_ca_path])
with assert_exception(self, errors.TLSVerificationError, 'not valid until'):
tls.TLSSocket('future.badtls.io', 11001, session=session)
@connection_timeout()
def test_tls_error_expired_2(self):
session = tls.TLSSession(extra_trust_roots=[badtls_ca_path])
# This test allows past or future since cert is 1963, which some systems
# will interpret as 2063
with assert_exception(self, errors.TLSVerificationError, 'certificate expired|not valid until'):
tls.TLSSocket('expired-1963.badtls.io', 11000, session=session)
@connection_timeout()
def test_tls_error_client_cert_required(self):
session = tls.TLSSession(extra_trust_roots=[badtls_ca_path])
with assert_exception(self, errors.TLSError, 'client authentication'):
tls.TLSSocket('required-auth.badtls.io', 10003, session=session)
@connection_timeout()
def test_tls_error_handshake_error_3(self):
session = tls.TLSSession(extra_trust_roots=[badtls_ca_path])
with assert_exception(self, errors.TLSError, 'weak certificate signature algorithm'):
tls.TLSSocket('weak-sig.badtls.io', 11004, session=session)
@connection_timeout()
def test_tls_error_non_web(self):
session = tls.TLSSession(extra_trust_roots=[badtls_ca_path])
with assert_exception(self, errors.TLSVerificationError, 'verification failed'):
tls.TLSSocket('bad-key-usage.badtls.io', 11005, session=session)
@connection_timeout()
def test_tls_error_wildcard_mismatch(self):
session = tls.TLSSession(extra_trust_roots=[badtls_ca_path])
with assert_exception(self, errors.TLSVerificationError, 'does not match'):
tls.TLSSocket('wildcard.mismatch.badtls.io', 11007, session=session)
@connection_timeout()
def test_tls_error_expired(self):
session = tls.TLSSession(extra_trust_roots=[badtls_ca_path])
with assert_exception(self, errors.TLSVerificationError, 'certificate expired'):
tls.TLSSocket('expired.badtls.io', 11006, session=session)
@connection_timeout()
def test_tls_error_self_signed(self):
with assert_exception(self, errors.TLSVerificationError, 'self-signed'):
tls.TLSSocket('self-signed.badssl.com', 443)
@connection_timeout()
def test_tls_error_weak_dh_params(self):
# badssl.com uses SNI, which Windows XP does not support
regex = 'weak DH parameters' if not xp else 'self-signed'
# ideally we would use badtls.io since that does not require SNI, however
# it is not possible to force a good version of OpenSSL to use such a
# small value for DH params, and I don't feel like the headache of trying
# to get an old, staticly-linked socat set up just for this text on XP
with assert_exception(self, errors.TLSError, regex):
tls.TLSSocket('dh512.badssl.com', 443)
@connection_timeout()
def test_tls_error_handshake_error(self):
session = tls.TLSSession(extra_trust_roots=[badtls_ca_path])
with assert_exception(self, errors.TLSError, 'TLS handshake failed'):
tls.TLSSocket('rc4-md5.badtls.io', 11009, session=session)
@connection_timeout()
def test_tls_error_handshake_error_2(self):
session = tls.TLSSession(extra_trust_roots=[badtls_ca_path])
with assert_exception(self, errors.TLSError, 'TLS handshake failed'):
tls.TLSSocket('rc4.badtls.io', 11008, session=session)
@connection_timeout()
def test_tls_extra_trust_roots_no_match(self):
expected = 'certificate issuer not found in trusted root certificate store'
with assert_exception(self, errors.TLSVerificationError, expected):
session = tls.TLSSession(extra_trust_roots=[digicert_ca_path])
tls.TLSSocket('domain-match.badtls.io', 10000, session=session)
@connection_timeout()
def test_tls_extra_trust_roots(self):
session = tls.TLSSession(extra_trust_roots=[badtls_ca_path, digicert_ca_path])
tls.TLSSocket('domain-match.badtls.io', 10000, session=session)
@connection_timeout(90)
def test_tls_graceful_disconnect(self):
# This connects to a bunch of pages on the same domains using
# the Connection: Keep-Alive header, however the server is
# configured to disconnect after 40 responses, so it requires
# TLSSocket() to properly handle a graceful disconnect.
urls = [
'https://packagecontrol.io/browse/popular.json?page=1',
'https://packagecontrol.io/browse/popular.json?page=2',
'https://packagecontrol.io/browse/popular.json?page=3',
'https://packagecontrol.io/browse/popular.json?page=4',
'https://packagecontrol.io/browse/popular.json?page=5',
'https://packagecontrol.io/browse/popular.json?page=6',
'https://packagecontrol.io/browse/popular.json?page=7',
'https://packagecontrol.io/browse/popular.json?page=8',
'https://packagecontrol.io/browse/popular.json?page=9',
'https://packagecontrol.io/browse/popular.json?page=10',
'https://packagecontrol.io/browse/popular.json?page=11',
'https://packagecontrol.io/browse/popular.json?page=12',
'https://packagecontrol.io/browse/popular.json?page=13',
'https://packagecontrol.io/browse/popular.json?page=14',
'https://packagecontrol.io/browse/popular.json?page=15',
'https://packagecontrol.io/browse/popular.json?page=16',
'https://packagecontrol.io/browse/popular.json?page=17',
'https://packagecontrol.io/browse/popular.json?page=18',
'https://packagecontrol.io/browse/popular.json?page=19',
'https://packagecontrol.io/browse/popular.json?page=20',
'https://packagecontrol.io/browse/popular.json?page=21',
'https://packagecontrol.io/browse/popular.json?page=22',
'https://packagecontrol.io/browse/popular.json?page=23',
'https://packagecontrol.io/browse/popular.json?page=24',
'https://packagecontrol.io/browse/popular.json?page=25',
'https://packagecontrol.io/browse/popular.json?page=26',
'https://packagecontrol.io/browse/popular.json?page=27',
'https://packagecontrol.io/browse/popular.json?page=28',
'https://packagecontrol.io/browse/popular.json?page=29',
'https://packagecontrol.io/browse/popular.json?page=30',
'https://packagecontrol.io/browse/popular.json?page=31',
'https://packagecontrol.io/browse/popular.json?page=32',
'https://packagecontrol.io/browse/popular.json?page=33',
'https://packagecontrol.io/browse/popular.json?page=34',
'https://packagecontrol.io/browse/popular.json?page=35',
'https://packagecontrol.io/browse/popular.json?page=36',
'https://packagecontrol.io/browse/popular.json?page=37',
'https://packagecontrol.io/browse/popular.json?page=38',
'https://packagecontrol.io/browse/popular.json?page=39',
'https://packagecontrol.io/browse/popular.json?page=40',
'https://packagecontrol.io/browse/popular.json?page=41',
'https://packagecontrol.io/browse/popular.json?page=42',
'https://packagecontrol.io/browse/popular.json?page=43',
'https://packagecontrol.io/browse/popular.json?page=44',
'https://packagecontrol.io/browse/popular.json?page=45',
'https://packagecontrol.io/browse/popular.json?page=46',
'https://packagecontrol.io/browse/popular.json?page=47',
'https://packagecontrol.io/browse/popular.json?page=48',
'https://packagecontrol.io/browse/popular.json?page=49',
'https://packagecontrol.io/browse/popular.json?page=50',
'https://packagecontrol.io/browse/popular.json?page=51',
'https://packagecontrol.io/browse/popular.json?page=52',
'https://packagecontrol.io/browse/popular.json?page=53',
'https://packagecontrol.io/browse/popular.json?page=54',
'https://packagecontrol.io/browse/popular.json?page=55',
'https://packagecontrol.io/browse/popular.json?page=56',
'https://packagecontrol.io/browse/popular.json?page=57',
'https://packagecontrol.io/browse/popular.json?page=58',
'https://packagecontrol.io/browse/popular.json?page=59',
'https://packagecontrol.io/browse/popular.json?page=60',
'https://packagecontrol.io/browse/popular.json?page=61',
'https://packagecontrol.io/browse/popular.json?page=62',
'https://packagecontrol.io/browse/popular.json?page=63',
'https://packagecontrol.io/browse/popular.json?page=64',
'https://packagecontrol.io/browse/popular.json?page=65',
'https://packagecontrol.io/browse/popular.json?page=66',
'https://packagecontrol.io/browse/popular.json?page=67',
'https://packagecontrol.io/browse/popular.json?page=68',
'https://packagecontrol.io/browse/popular.json?page=69',
'https://packagecontrol.io/browse/popular.json?page=70',
'https://packagecontrol.io/browse/popular.json?page=71',
'https://packagecontrol.io/browse/popular.json?page=72',
'https://packagecontrol.io/browse/popular.json?page=73',
'https://packagecontrol.io/browse/popular.json?page=74',
'https://packagecontrol.io/browse/popular.json?page=75',
'https://packagecontrol.io/browse/popular.json?page=76',
'https://packagecontrol.io/browse/popular.json?page=77',
'https://packagecontrol.io/browse/popular.json?page=78',
'https://packagecontrol.io/browse/popular.json?page=79',
'https://packagecontrol.io/browse/popular.json?page=80',
'https://packagecontrol.io/browse/popular.json?page=81',
'https://packagecontrol.io/browse/popular.json?page=82',
'https://packagecontrol.io/browse/popular.json?page=83',
'https://packagecontrol.io/browse/popular.json?page=84',
'https://packagecontrol.io/browse/popular.json?page=85',
'https://packagecontrol.io/browse/popular.json?page=86',
'https://packagecontrol.io/browse/popular.json?page=87',
'https://packagecontrol.io/browse/popular.json?page=88',
'https://packagecontrol.io/browse/popular.json?page=89',
'https://packagecontrol.io/browse/popular.json?page=90',
'https://packagecontrol.io/browse/popular.json?page=91',
'https://packagecontrol.io/browse/popular.json?page=92',
'https://packagecontrol.io/browse/popular.json?page=93',
'https://packagecontrol.io/browse/popular.json?page=94',
'https://packagecontrol.io/browse/popular.json?page=95',
'https://packagecontrol.io/browse/popular.json?page=96',
'https://packagecontrol.io/browse/popular.json?page=97',
'https://packagecontrol.io/browse/popular.json?page=98',
'https://packagecontrol.io/browse/popular.json?page=99',
'https://packagecontrol.io/browse/popular.json?page=100',
]
c = HttpsClient()
for url in urls:
c.download(url, 15)
@connection_timeout(60)
def test_tls_large_download(self):
# This tests downloading a large (3MB+) file to ensure
# there aren't buffer overflow issues in TLSSocket()
c = HttpsClient()
c.download('https://packagecontrol.io/channel_v3.json', 15)
@connection_timeout()
def test_tls_protocol_version(self):
session = tls.TLSSession(set(['TLSv1', 'TLSv1.1']))
with assert_exception(self, errors.TLSError, 'TLS handshake failed - protocol version error'):
tls.TLSSocket('github.com', 443, session=session)
@connection_timeout()
def test_tls_pause_timeout(self):
c = HttpsClient(False, True)
c.download('https://packagecontrol.io/browse/popular.json?page=1', 5)
time.sleep(10)
c.download('https://packagecontrol.io/browse/popular.json?page=2', 5)
@connection_timeout()
def test_tls_closed_connection_read(self):
ip = socket.gethostbyname('badtls.io')
with assert_exception(self, (errors.TLSDisconnectError, errors.TLSError),
'The remote end closed the connection|TLS handshake failed'):
try:
sock, send_sock, recv_sock, server = make_socket_proxy(ip, 443)
tsock = tls.TLSSocket.wrap(sock, 'badtls.io')
send_sock.close()
tsock.read(8192)
finally:
recv_sock.close()
server.close()
@connection_timeout()
def test_tls_closed_connection_write(self):
ip = socket.gethostbyname('badtls.io')
with assert_exception(self, (errors.TLSDisconnectError, errors.TLSError),
'The remote end closed the connection|TLS handshake failed'):
try:
sock, send_sock, recv_sock, server = make_socket_proxy(ip, 443)
tsock = tls.TLSSocket.wrap(sock, 'badtls.io')
send_sock.close()
tsock.write(b'GET / HTTP/1.1\r\n')
tsock.write(b'\r\n')
tsock.write(b'\r\n')
finally:
recv_sock.close()
server.close()
@connection_timeout()
def test_tls_closed_connection_read_handshake(self):
ip = socket.gethostbyname('badtls.io')
# Break the connection after the ServerHello is received
def recv_callback(src, dest):
data = src.recv(8192)
for record_type, tls_version, message in parse_tls_records(data):
if record_type == b'\x16':
for message_type, payload in parse_handshake_messages(message):
if message_type == b'\x02':
dest.close()
return
dest.send(data)
with assert_exception(self, (errors.TLSDisconnectError, errors.TLSError),
'The remote end closed the connection|TLS handshake failed'):
try:
sock, send_sock, recv_sock, server = make_socket_proxy(ip, 443, None, recv_callback)
tls.TLSSocket.wrap(sock, 'badtls.io')
finally:
recv_sock.close()
send_sock.close()
server.close()
@connection_timeout()
def test_tls_closed_connection_write_handshake(self):
ip = socket.gethostbyname('badtls.io')
# Break the connection after the ClientHello is sent
def send_callback(src, dest):
data = src.recv(8192)
for record_type, tls_version, message in parse_tls_records(data):
if record_type == b'\x16':
for message_type, payload in parse_handshake_messages(message):
if message_type == b'\x01':
src.close()
return
dest.send(data)
with assert_exception(self, (errors.TLSDisconnectError, errors.TLSError),
'The remote end closed the connection|TLS handshake failed'):
recv_sock = None
send_sock = None
server = None
try:
sock, send_sock, recv_sock, server = make_socket_proxy(ip, 443, send_callback)
tls.TLSSocket.wrap(sock, 'badtls.io')
finally:
if recv_sock:
recv_sock.close()
if send_sock:
send_sock.close()
if server:
server.close()
@connection_timeout()
def test_tls_closed_connection_read_shutdown(self):
ip = socket.gethostbyname('badtls.io')
try:
sock, send_sock, recv_sock, server = make_socket_proxy(ip, 443)
tsock = None
try:
tsock = tls.TLSSocket.wrap(sock, 'badtls.io')
send_sock.close()
tsock.read(8192)
shutdown = False
except (errors.TLSError):
if tsock:
tsock.shutdown()
shutdown = True
self.assertEqual(True, shutdown)
finally:
recv_sock.close()
server.close()
@connection_timeout()
def test_tls_closed_connection_write_shutdown(self):
ip = socket.gethostbyname('badtls.io')
try:
sock, send_sock, recv_sock, server = make_socket_proxy(ip, 443)
tsock = None
try:
tsock = tls.TLSSocket.wrap(sock, 'badtls.io')
send_sock.close()
tsock.write(b'GET / HTTP/1.1\r\n')
tsock.write(b'\r\n')
tsock.write(b'\r\n')
tsock.read(8192)
shutdown = False
except (errors.TLSError):
if tsock:
tsock.shutdown()
shutdown = True
self.assertEqual(True, shutdown)
finally:
recv_sock.close()
server.close()
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