# Test the support for SSL and sockets import sys import unittest from test import support import socket import select import time import gc import os import errno import pprint import tempfile import urllib.request import traceback import asyncore import weakref import platform import functools ssl = support.import_module("ssl") PROTOCOLS = [ ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_TLSv1 ] if hasattr(ssl, 'PROTOCOL_SSLv2'): PROTOCOLS.append(ssl.PROTOCOL_SSLv2) HOST = support.HOST data_file = lambda name: 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) SVN_PYTHON_ORG_ROOT_CERT = data_file("https_svn_python_org_root.pem") EMPTYCERT = data_file("nullcert.pem") BADCERT = data_file("badcert.pem") WRONGCERT = data_file("XXXnonexisting.pem") BADKEY = data_file("badkey.pem") NOKIACERT = data_file("nokia.pem") DHFILE = data_file("dh512.pem") BYTES_DHFILE = os.fsencode(DHFILE) 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) # 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 class BasicSocketTests(unittest.TestCase): def test_constants(self): #ssl.PROTOCOL_SSLv2 ssl.PROTOCOL_SSLv23 ssl.PROTOCOL_SSLv3 ssl.PROTOCOL_TLSv1 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}) 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) try: ssl.RAND_egd(1) except TypeError: pass else: print("didn't raise TypeError") ssl.RAND_add("this is a random string", 75.0) 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 p = ssl._ssl._test_decode_cert(CERTFILE) if support.verbose: sys.stdout.write("\n" + pprint.pformat(p) + "\n") self.assertEqual(p['issuer'], ((('countryName', 'XY'),), (('localityName', 'Castle Anthrax'),), (('organizationName', 'Python Software Foundation'),), (('commonName', 'localhost'),)) ) self.assertEqual(p['notAfter'], 'Oct 5 23:01:56 2020 GMT') self.assertEqual(p['notBefore'], 'Oct 8 23:01:56 2010 GMT') self.assertEqual(p['serialNumber'], 'D7C7381919AFC24E') self.assertEqual(p['subject'], ((('countryName', 'XY'),), (('localityName', 'Castle Anthrax'),), (('organizationName', 'Python Software Foundation'),), (('commonName', 'localhost'),)) ) self.assertEqual(p['subjectAltName'], (('DNS', 'localhost'),)) # 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')) ) def test_DER_to_PEM(self): with open(SVN_PYTHON_ORG_ROOT_CERT, '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) # < 2.0 self.assertLess(n, 0x20000000) major, minor, fix, patch, status = t self.assertGreaterEqual(major, 0) self.assertLess(major, 2) self.assertGreaterEqual(minor, 0) self.assertLess(minor, 256) self.assertGreaterEqual(fix, 0) self.assertLess(fix, 256) self.assertGreaterEqual(patch, 0) self.assertLessEqual(patch, 26) self.assertGreaterEqual(status, 0) self.assertLessEqual(status, 15) # Version string as returned by OpenSSL, the format might change self.assertTrue(s.startswith("OpenSSL {:d}.{:d}.{:d}".format(major, minor, fix)), (s, t)) @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 = ssl.wrap_socket(s) wr = weakref.ref(ss) del ss self.assertEqual(wr(), None) def test_wrapped_unconnected(self): # Methods on an unconnected SSLSocket propagate the original # socket.error raise by the underlying socket object. s = socket.socket(socket.AF_INET) ss = ssl.wrap_socket(s) self.assertRaises(socket.error, ss.recv, 1) self.assertRaises(socket.error, ss.recv_into, bytearray(b'x')) self.assertRaises(socket.error, ss.recvfrom, 1) self.assertRaises(socket.error, ss.recvfrom_into, bytearray(b'x'), 1) self.assertRaises(socket.error, ss.send, b'x') self.assertRaises(socket.error, ss.sendto, b'x', ('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) ss = ssl.wrap_socket(s) self.assertEqual(timeout, ss.gettimeout()) def test_errors(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="") s = ssl.wrap_socket(sock, server_side=True, certfile=CERTFILE) self.assertRaisesRegex(ValueError, "can't connect in server-side mode", s.connect, (HOST, 8080)) with self.assertRaises(IOError) as cm: with socket.socket() as sock: ssl.wrap_socket(sock, certfile=WRONGCERT) self.assertEqual(cm.exception.errno, errno.ENOENT) with self.assertRaises(IOError) as cm: with socket.socket() as sock: ssl.wrap_socket(sock, certfile=CERTFILE, keyfile=WRONGCERT) self.assertEqual(cm.exception.errno, errno.ENOENT) with self.assertRaises(IOError) as cm: with socket.socket() as sock: ssl.wrap_socket(sock, certfile=WRONGCERT, keyfile=WRONGCERT) self.assertEqual(cm.exception.errno, errno.ENOENT) 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) 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') cert = {'subject': ((('commonName', 'a.*.com'),),)} ok(cert, 'a.foo.com') fail(cert, 'a..com') fail(cert, 'a.com') cert = {'subject': ((('commonName', 'f*.com'),),)} ok(cert, 'foo.com') ok(cert, 'f.com') fail(cert, 'bar.com') fail(cert, 'foo.a.com') fail(cert, 'bar.foo.com') # 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', ''))} ok(cert, 'linuxfr.org') ok(cert, 'linuxfr.com') # Not a "DNS" entry fail(cert, '') # 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') # 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') def test_server_side(self): # server_hostname doesn't work for server sockets ctx = ssl.SSLContext(ssl.PROTOCOL_SSLv23) 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) ss = ssl.wrap_socket(s) with self.assertRaises(ValueError): ss.get_channel_binding("unknown-type") @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) ss = ssl.wrap_socket(s) self.assertIsNone(ss.get_channel_binding("tls-unique")) # the same for server-side s = socket.socket(socket.AF_INET) ss = ssl.wrap_socket(s, server_side=True, certfile=CERTFILE) self.assertIsNone(ss.get_channel_binding("tls-unique")) class ContextTests(unittest.TestCase): @skip_if_broken_ubuntu_ssl def test_constructor(self): if hasattr(ssl, 'PROTOCOL_SSLv2'): ctx = ssl.SSLContext(ssl.PROTOCOL_SSLv2) ctx = ssl.SSLContext(ssl.PROTOCOL_SSLv23) ctx = ssl.SSLContext(ssl.PROTOCOL_SSLv3) ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1) self.assertRaises(TypeError, ssl.SSLContext) 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_TLSv1) ctx.set_ciphers("ALL") ctx.set_ciphers("DEFAULT") with self.assertRaisesRegex(ssl.SSLError, "No cipher can be selected"): ctx.set_ciphers("^$:,;?*'dorothyx") @skip_if_broken_ubuntu_ssl def test_options(self): ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1) # OP_ALL is the default value self.assertEqual(ssl.OP_ALL, ctx.options) ctx.options |= ssl.OP_NO_SSLv2 self.assertEqual(ssl.OP_ALL | ssl.OP_NO_SSLv2, ctx.options) ctx.options |= ssl.OP_NO_SSLv3 self.assertEqual(ssl.OP_ALL | ssl.OP_NO_SSLv2 | ssl.OP_NO_SSLv3, ctx.options) if can_clear_options(): ctx.options = (ctx.options & ~ssl.OP_NO_SSLv2) | ssl.OP_NO_TLSv1 self.assertEqual(ssl.OP_ALL | ssl.OP_NO_TLSv1 | ssl.OP_NO_SSLv3, ctx.options) ctx.options = 0 self.assertEqual(0, ctx.options) else: with self.assertRaises(ValueError): ctx.options = 0 def test_verify(self): ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1) # Default value self.assertEqual(ctx.verify_mode, ssl.CERT_NONE) ctx.verify_mode = ssl.CERT_OPTIONAL self.assertEqual(ctx.verify_mode, ssl.CERT_OPTIONAL) ctx.verify_mode = ssl.CERT_REQUIRED self.assertEqual(ctx.verify_mode, ssl.CERT_REQUIRED) ctx.verify_mode = ssl.CERT_NONE self.assertEqual(ctx.verify_mode, ssl.CERT_NONE) with self.assertRaises(TypeError): ctx.verify_mode = None with self.assertRaises(ValueError): ctx.verify_mode = 42 def test_load_cert_chain(self): ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1) # Combined key and cert in a single file ctx.load_cert_chain(CERTFILE) ctx.load_cert_chain(CERTFILE, keyfile=CERTFILE) self.assertRaises(TypeError, ctx.load_cert_chain, keyfile=CERTFILE) with self.assertRaises(IOError) as cm: ctx.load_cert_chain(WRONGCERT) self.assertEqual(cm.exception.errno, errno.ENOENT) with self.assertRaisesRegex(ssl.SSLError, "PEM lib"): ctx.load_cert_chain(BADCERT) with self.assertRaisesRegex(ssl.SSLError, "PEM lib"): ctx.load_cert_chain(EMPTYCERT) # Separate key and cert ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1) ctx.load_cert_chain(ONLYCERT, ONLYKEY) ctx.load_cert_chain(certfile=ONLYCERT, keyfile=ONLYKEY) ctx.load_cert_chain(certfile=BYTES_ONLYCERT, keyfile=BYTES_ONLYKEY) with self.assertRaisesRegex(ssl.SSLError, "PEM lib"): ctx.load_cert_chain(ONLYCERT) with self.assertRaisesRegex(ssl.SSLError, "PEM lib"): ctx.load_cert_chain(ONLYKEY) with self.assertRaisesRegex(ssl.SSLError, "PEM lib"): ctx.load_cert_chain(certfile=ONLYKEY, keyfile=ONLYCERT) # Mismatching key and cert ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1) with self.assertRaisesRegex(ssl.SSLError, "key values mismatch"): ctx.load_cert_chain(SVN_PYTHON_ORG_ROOT_CERT, ONLYKEY) # Password protected key and cert ctx.load_cert_chain(CERTFILE_PROTECTED, password=KEY_PASSWORD) ctx.load_cert_chain(CERTFILE_PROTECTED, password=KEY_PASSWORD.encode()) ctx.load_cert_chain(CERTFILE_PROTECTED, password=bytearray(KEY_PASSWORD.encode())) ctx.load_cert_chain(ONLYCERT, ONLYKEY_PROTECTED, KEY_PASSWORD) ctx.load_cert_chain(ONLYCERT, ONLYKEY_PROTECTED, KEY_PASSWORD.encode()) ctx.load_cert_chain(ONLYCERT, ONLYKEY_PROTECTED, bytearray(KEY_PASSWORD.encode())) with self.assertRaisesRegex(TypeError, "should be a string"): ctx.load_cert_chain(CERTFILE_PROTECTED, password=True) with self.assertRaises(ssl.SSLError): ctx.load_cert_chain(CERTFILE_PROTECTED, password="badpass") with self.assertRaisesRegex(ValueError, "cannot be longer"): # openssl has a fixed limit on the password buffer. # PEM_BUFSIZE is generally set to 1kb. # Return a string larger than this. ctx.load_cert_chain(CERTFILE_PROTECTED, password=b'a' * 102400) # Password callback def getpass_unicode(): return KEY_PASSWORD def getpass_bytes(): return KEY_PASSWORD.encode() def getpass_bytearray(): return bytearray(KEY_PASSWORD.encode()) def getpass_badpass(): return "badpass" def getpass_huge(): return b'a' * (1024 * 1024) def getpass_bad_type(): return 9 def getpass_exception(): raise Exception('getpass error') class GetPassCallable: def __call__(self): return KEY_PASSWORD def getpass(self): return KEY_PASSWORD ctx.load_cert_chain(CERTFILE_PROTECTED, password=getpass_unicode) ctx.load_cert_chain(CERTFILE_PROTECTED, password=getpass_bytes) ctx.load_cert_chain(CERTFILE_PROTECTED, password=getpass_bytearray) ctx.load_cert_chain(CERTFILE_PROTECTED, password=GetPassCallable()) ctx.load_cert_chain(CERTFILE_PROTECTED, password=GetPassCallable().getpass) with self.assertRaises(ssl.SSLError): ctx.load_cert_chain(CERTFILE_PROTECTED, password=getpass_badpass) with self.assertRaisesRegex(ValueError, "cannot be longer"): ctx.load_cert_chain(CERTFILE_PROTECTED, password=getpass_huge) with self.assertRaisesRegex(TypeError, "must return a string"): ctx.load_cert_chain(CERTFILE_PROTECTED, password=getpass_bad_type) with self.assertRaisesRegex(Exception, "getpass error"): ctx.load_cert_chain(CERTFILE_PROTECTED, password=getpass_exception) # Make sure the password function isn't called if it isn't needed ctx.load_cert_chain(CERTFILE, password=getpass_exception) def test_load_verify_locations(self): ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1) ctx.load_verify_locations(CERTFILE) ctx.load_verify_locations(cafile=CERTFILE, capath=None) ctx.load_verify_locations(BYTES_CERTFILE) ctx.load_verify_locations(cafile=BYTES_CERTFILE, capath=None) self.assertRaises(TypeError, ctx.load_verify_locations) self.assertRaises(TypeError, ctx.load_verify_locations, None, None) with self.assertRaises(IOError) as cm: ctx.load_verify_locations(WRONGCERT) self.assertEqual(cm.exception.errno, errno.ENOENT) with self.assertRaisesRegex(ssl.SSLError, "PEM lib"): ctx.load_verify_locations(BADCERT) ctx.load_verify_locations(CERTFILE, CAPATH) ctx.load_verify_locations(CERTFILE, capath=BYTES_CAPATH) # Issue #10989: crash if the second argument type is invalid self.assertRaises(TypeError, ctx.load_verify_locations, None, True) def test_load_dh_params(self): ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1) ctx.load_dh_params(DHFILE) if os.name != 'nt': ctx.load_dh_params(BYTES_DHFILE) self.assertRaises(TypeError, ctx.load_dh_params) self.assertRaises(TypeError, ctx.load_dh_params, None) with self.assertRaises(FileNotFoundError) as cm: ctx.load_dh_params(WRONGCERT) self.assertEqual(cm.exception.errno, errno.ENOENT) with self.assertRaises(ssl.SSLError) as cm: ctx.load_dh_params(CERTFILE) @skip_if_broken_ubuntu_ssl def test_session_stats(self): for proto in PROTOCOLS: ctx = ssl.SSLContext(proto) self.assertEqual(ctx.session_stats(), { 'number': 0, 'connect': 0, 'connect_good': 0, 'connect_renegotiate': 0, 'accept': 0, 'accept_good': 0, 'accept_renegotiate': 0, 'hits': 0, 'misses': 0, 'timeouts': 0, 'cache_full': 0, }) def test_set_default_verify_paths(self): # There's not much we can do to test that it acts as expected, # so just check it doesn't crash or raise an exception. ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1) ctx.set_default_verify_paths() @unittest.skipUnless(ssl.HAS_ECDH, "ECDH disabled on this OpenSSL build") def test_set_ecdh_curve(self): ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1) ctx.set_ecdh_curve("prime256v1") ctx.set_ecdh_curve(b"prime256v1") self.assertRaises(TypeError, ctx.set_ecdh_curve) self.assertRaises(TypeError, ctx.set_ecdh_curve, None) self.assertRaises(ValueError, ctx.set_ecdh_curve, "foo") self.assertRaises(ValueError, ctx.set_ecdh_curve, b"foo") class SSLErrorTests(unittest.TestCase): def test_str(self): # The str() of a SSLError doesn't include the errno e = ssl.SSLError(1, "foo") self.assertEqual(str(e), "foo") self.assertEqual(e.errno, 1) # Same for a subclass e = ssl.SSLZeroReturnError(1, "foo") self.assertEqual(str(e), "foo") self.assertEqual(e.errno, 1) def test_lib_reason(self): # Test the library and reason attributes ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1) with self.assertRaises(ssl.SSLError) as cm: ctx.load_dh_params(CERTFILE) self.assertEqual(cm.exception.library, 'PEM') self.assertEqual(cm.exception.reason, 'NO_START_LINE') s = str(cm.exception) self.assertTrue(s.startswith("[PEM: NO_START_LINE] no start line"), s) def test_subclass(self): # Check that the appropriate SSLError subclass is raised # (this only tests one of them) ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1) with socket.socket() as s: s.bind(("127.0.0.1", 0)) s.listen(5) with socket.socket() as c: c.connect(s.getsockname()) c.setblocking(False) c = ctx.wrap_socket(c, False, do_handshake_on_connect=False) with self.assertRaises(ssl.SSLWantReadError) as cm: c.do_handshake() s = str(cm.exception) self.assertTrue(s.startswith("The operation did not complete (read)"), s) # For compatibility self.assertEqual(cm.exception.errno, ssl.SSL_ERROR_WANT_READ) class NetworkedTests(unittest.TestCase): def test_connect(self): with support.transient_internet("svn.python.org"): s = ssl.wrap_socket(socket.socket(socket.AF_INET), cert_reqs=ssl.CERT_NONE) try: s.connect(("svn.python.org", 443)) self.assertEqual({}, s.getpeercert()) finally: s.close() # this should fail because we have no verification certs s = ssl.wrap_socket(socket.socket(socket.AF_INET), cert_reqs=ssl.CERT_REQUIRED) self.assertRaisesRegex(ssl.SSLError, "certificate verify failed", s.connect, ("svn.python.org", 443)) s.close() # this should succeed because we specify the root cert s = ssl.wrap_socket(socket.socket(socket.AF_INET), cert_reqs=ssl.CERT_REQUIRED, ca_certs=SVN_PYTHON_ORG_ROOT_CERT) try: s.connect(("svn.python.org", 443)) self.assertTrue(s.getpeercert()) finally: s.close() def test_connect_ex(self): # Issue #11326: check connect_ex() implementation with support.transient_internet("svn.python.org"): s = ssl.wrap_socket(socket.socket(socket.AF_INET), cert_reqs=ssl.CERT_REQUIRED, ca_certs=SVN_PYTHON_ORG_ROOT_CERT) try: self.assertEqual(0, s.connect_ex(("svn.python.org", 443))) self.assertTrue(s.getpeercert()) finally: s.close() def test_non_blocking_connect_ex(self): # Issue #11326: non-blocking connect_ex() should allow handshake # to proceed after the socket gets ready. with support.transient_internet("svn.python.org"): s = ssl.wrap_socket(socket.socket(socket.AF_INET), cert_reqs=ssl.CERT_REQUIRED, ca_certs=SVN_PYTHON_ORG_ROOT_CERT, do_handshake_on_connect=False) try: s.setblocking(False) rc = s.connect_ex(('svn.python.org', 443)) # EWOULDBLOCK under Windows, EINPROGRESS elsewhere self.assertIn(rc, (0, errno.EINPROGRESS, errno.EWOULDBLOCK)) # Wait for connect to finish select.select([], [s], [], 5.0) # Non-blocking handshake while True: try: s.do_handshake() break except ssl.SSLWantReadError: select.select([s], [], [], 5.0) except ssl.SSLWantWriteError: select.select([], [s], [], 5.0) # SSL established self.assertTrue(s.getpeercert()) finally: s.close() def test_timeout_connect_ex(self): # Issue #12065: on a timeout, connect_ex() should return the original # errno (mimicking the behaviour of non-SSL sockets). with support.transient_internet("svn.python.org"): s = ssl.wrap_socket(socket.socket(socket.AF_INET), cert_reqs=ssl.CERT_REQUIRED, ca_certs=SVN_PYTHON_ORG_ROOT_CERT, do_handshake_on_connect=False) try: s.settimeout(0.0000001) rc = s.connect_ex(('svn.python.org', 443)) if rc == 0: self.skipTest("svn.python.org responded too quickly") self.assertIn(rc, (errno.EAGAIN, errno.EWOULDBLOCK)) finally: s.close() def test_connect_with_context(self): with support.transient_internet("svn.python.org"): # Same as test_connect, but with a separately created context ctx = ssl.SSLContext(ssl.PROTOCOL_SSLv23) s = ctx.wrap_socket(socket.socket(socket.AF_INET)) s.connect(("svn.python.org", 443)) try: self.assertEqual({}, s.getpeercert()) finally: s.close() # Same with a server hostname s = ctx.wrap_socket(socket.socket(socket.AF_INET), server_hostname="svn.python.org") if ssl.HAS_SNI: s.connect(("svn.python.org", 443)) s.close() else: self.assertRaises(ValueError, s.connect, ("svn.python.org", 443)) # This should fail because we have no verification certs ctx.verify_mode = ssl.CERT_REQUIRED s = ctx.wrap_socket(socket.socket(socket.AF_INET)) self.assertRaisesRegex(ssl.SSLError, "certificate verify failed", s.connect, ("svn.python.org", 443)) s.close() # This should succeed because we specify the root cert ctx.load_verify_locations(SVN_PYTHON_ORG_ROOT_CERT) s = ctx.wrap_socket(socket.socket(socket.AF_INET)) s.connect(("svn.python.org", 443)) try: cert = s.getpeercert() self.assertTrue(cert) finally: s.close() def test_connect_capath(self): # Verify server certificates using the `capath` argument # NOTE: the subject hashing algorithm has been changed between # OpenSSL 0.9.8n and 1.0.0, as a result the capath directory must # contain both versions of each certificate (same content, different # filename) for this test to be portable across OpenSSL releases. with support.transient_internet("svn.python.org"): ctx = ssl.SSLContext(ssl.PROTOCOL_SSLv23) ctx.verify_mode = ssl.CERT_REQUIRED ctx.load_verify_locations(capath=CAPATH) s = ctx.wrap_socket(socket.socket(socket.AF_INET)) s.connect(("svn.python.org", 443)) try: cert = s.getpeercert() self.assertTrue(cert) finally: s.close() # Same with a bytes `capath` argument ctx = ssl.SSLContext(ssl.PROTOCOL_SSLv23) ctx.verify_mode = ssl.CERT_REQUIRED ctx.load_verify_locations(capath=BYTES_CAPATH) s = ctx.wrap_socket(socket.socket(socket.AF_INET)) s.connect(("svn.python.org", 443)) try: cert = s.getpeercert() self.assertTrue(cert) finally: s.close() @unittest.skipIf(os.name == "nt", "Can't use a socket as a file under Windows") def test_makefile_close(self): # Issue #5238: creating a file-like object with makefile() shouldn't # delay closing the underlying "real socket" (here tested with its # file descriptor, hence skipping the test under Windows). with support.transient_internet("svn.python.org"): ss = ssl.wrap_socket(socket.socket(socket.AF_INET)) ss.connect(("svn.python.org", 443)) fd = ss.fileno() f = ss.makefile() f.close() # The fd is still open os.read(fd, 0) # Closing the SSL socket should close the fd too ss.close() gc.collect() with self.assertRaises(OSError) as e: os.read(fd, 0) self.assertEqual(e.exception.errno, errno.EBADF) def test_non_blocking_handshake(self): with support.transient_internet("svn.python.org"): s = socket.socket(socket.AF_INET) s.connect(("svn.python.org", 443)) s.setblocking(False) s = ssl.wrap_socket(s, cert_reqs=ssl.CERT_NONE, do_handshake_on_connect=False) count = 0 while True: try: count += 1 s.do_handshake() break except ssl.SSLWantReadError: select.select([s], [], []) except ssl.SSLWantWriteError: select.select([], [s], []) s.close() if support.verbose: sys.stdout.write("\nNeeded %d calls to do_handshake() to establish session.\n" % count) def test_get_server_certificate(self): def _test_get_server_certificate(host, port, cert=None): with support.transient_internet(host): pem = ssl.get_server_certificate((host, port)) if not pem: self.fail("No server certificate on %s:%s!" % (host, port)) try: pem = ssl.get_server_certificate((host, port), ca_certs=CERTFILE) except ssl.SSLError as x: #should fail if support.verbose: sys.stdout.write("%s\n" % x) else: self.fail("Got server certificate %s for %s:%s!" % (pem, host, port)) pem = ssl.get_server_certificate((host, port), ca_certs=cert) if not pem: self.fail("No server certificate on %s:%s!" % (host, port)) if support.verbose: sys.stdout.write("\nVerified certificate for %s:%s is\n%s\n" % (host, port ,pem)) _test_get_server_certificate('svn.python.org', 443, SVN_PYTHON_ORG_ROOT_CERT) if support.IPV6_ENABLED: _test_get_server_certificate('ipv6.google.com', 443) def test_ciphers(self): remote = ("svn.python.org", 443) with support.transient_internet(remote[0]): s = ssl.wrap_socket(socket.socket(socket.AF_INET), cert_reqs=ssl.CERT_NONE, ciphers="ALL") s.connect(remote) s = ssl.wrap_socket(socket.socket(socket.AF_INET), cert_reqs=ssl.CERT_NONE, ciphers="DEFAULT") s.connect(remote) # Error checking can happen at instantiation or when connecting with self.assertRaisesRegex(ssl.SSLError, "No cipher can be selected"): with socket.socket(socket.AF_INET) as sock: s = ssl.wrap_socket(sock, cert_reqs=ssl.CERT_NONE, ciphers="^$:,;?*'dorothyx") s.connect(remote) def test_algorithms(self): # Issue #8484: all algorithms should be available when verifying a # certificate. # SHA256 was added in OpenSSL 0.9.8 if ssl.OPENSSL_VERSION_INFO < (0, 9, 8, 0, 15): self.skipTest("SHA256 not available on %r" % ssl.OPENSSL_VERSION) # sha256.tbs-internet.com needs SNI to use the correct certificate if not ssl.HAS_SNI: self.skipTest("SNI needed for this test") # https://sha2.hboeck.de/ was used until 2011-01-08 (no route to host) remote = ("sha256.tbs-internet.com", 443) sha256_cert = os.path.join(os.path.dirname(__file__), "sha256.pem") with support.transient_internet("sha256.tbs-internet.com"): ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1) ctx.verify_mode = ssl.CERT_REQUIRED ctx.load_verify_locations(sha256_cert) s = ctx.wrap_socket(socket.socket(socket.AF_INET), server_hostname="sha256.tbs-internet.com") try: s.connect(remote) if support.verbose: sys.stdout.write("\nCipher with %r is %r\n" % (remote, s.cipher())) sys.stdout.write("Certificate is:\n%s\n" % pprint.pformat(s.getpeercert())) finally: s.close() try: import threading except ImportError: _have_threads = False else: _have_threads = True from test.ssl_servers import make_https_server class ThreadedEchoServer(threading.Thread): class ConnectionHandler(threading.Thread): """A mildly complicated class, because we want it to work both with and without the SSL wrapper around the socket connection, so that we can test the STARTTLS functionality.""" def __init__(self, server, connsock, addr): self.server = server self.running = False self.sock = connsock self.addr = addr self.sock.setblocking(1) self.sslconn = None threading.Thread.__init__(self) self.daemon = True def wrap_conn(self): try: self.sslconn = self.server.context.wrap_socket( self.sock, server_side=True) self.server.selected_protocols.append(self.sslconn.selected_npn_protocol()) except ssl.SSLError as e: # XXX Various errors can have happened here, for example # a mismatching protocol version, an invalid certificate, # or a low-level bug. This should be made more discriminating. self.server.conn_errors.append(e) if self.server.chatty: handle_error("\n server: bad connection attempt from " + repr(self.addr) + ":\n") self.running = False self.server.stop() self.close() return False else: if self.server.context.verify_mode == ssl.CERT_REQUIRED: cert = self.sslconn.getpeercert() if support.verbose and self.server.chatty: sys.stdout.write(" client cert is " + pprint.pformat(cert) + "\n") cert_binary = self.sslconn.getpeercert(True) if support.verbose and self.server.chatty: sys.stdout.write(" cert binary is " + str(len(cert_binary)) + " bytes\n") cipher = self.sslconn.cipher() if support.verbose and self.server.chatty: sys.stdout.write(" server: connection cipher is now " + str(cipher) + "\n") sys.stdout.write(" server: selected protocol is now " + str(self.sslconn.selected_npn_protocol()) + "\n") return True def read(self): if self.sslconn: return self.sslconn.read() else: return self.sock.recv(1024) def write(self, bytes): if self.sslconn: return self.sslconn.write(bytes) else: return self.sock.send(bytes) def close(self): if self.sslconn: self.sslconn.close() else: self.sock.close() def run(self): self.running = True if not self.server.starttls_server: if not self.wrap_conn(): return while self.running: try: msg = self.read() stripped = msg.strip() if not stripped: # eof, so quit this handler self.running = False self.close() elif stripped == b'over': if support.verbose and self.server.connectionchatty: sys.stdout.write(" server: client closed connection\n") self.close() return elif (self.server.starttls_server and stripped == b'STARTTLS'): if support.verbose and self.server.connectionchatty: sys.stdout.write(" server: read STARTTLS from client, sending OK...\n") self.write(b"OK\n") if not self.wrap_conn(): return elif (self.server.starttls_server and self.sslconn and stripped == b'ENDTLS'): if support.verbose and self.server.connectionchatty: sys.stdout.write(" server: read ENDTLS from client, sending OK...\n") self.write(b"OK\n") self.sock = self.sslconn.unwrap() self.sslconn = None if support.verbose and self.server.connectionchatty: sys.stdout.write(" server: connection is now unencrypted...\n") elif stripped == b'CB tls-unique': if support.verbose and self.server.connectionchatty: sys.stdout.write(" server: read CB tls-unique from client, sending our CB data...\n") data = self.sslconn.get_channel_binding("tls-unique") self.write(repr(data).encode("us-ascii") + b"\n") else: if (support.verbose and self.server.connectionchatty): ctype = (self.sslconn and "encrypted") or "unencrypted" sys.stdout.write(" server: read %r (%s), sending back %r (%s)...\n" % (msg, ctype, msg.lower(), ctype)) self.write(msg.lower()) except socket.error: if self.server.chatty: handle_error("Test server failure:\n") self.close() self.running = False # normally, we'd just stop here, but for the test # harness, we want to stop the server self.server.stop() def __init__(self, certificate=None, ssl_version=None, certreqs=None, cacerts=None, chatty=True, connectionchatty=False, starttls_server=False, npn_protocols=None, ciphers=None, context=None): if context: self.context = context else: self.context = ssl.SSLContext(ssl_version if ssl_version is not None else ssl.PROTOCOL_TLSv1) self.context.verify_mode = (certreqs if certreqs is not None else ssl.CERT_NONE) if cacerts: self.context.load_verify_locations(cacerts) if certificate: self.context.load_cert_chain(certificate) if npn_protocols: self.context.set_npn_protocols(npn_protocols) if ciphers: self.context.set_ciphers(ciphers) self.chatty = chatty self.connectionchatty = connectionchatty self.starttls_server = starttls_server self.sock = socket.socket() self.port = support.bind_port(self.sock) self.flag = None self.active = False self.selected_protocols = [] self.conn_errors = [] threading.Thread.__init__(self) self.daemon = True def __enter__(self): self.start(threading.Event()) self.flag.wait() return self def __exit__(self, *args): self.stop() self.join() def start(self, flag=None): self.flag = flag threading.Thread.start(self) def run(self): self.sock.settimeout(0.05) self.sock.listen(5) self.active = True if self.flag: # signal an event self.flag.set() while self.active: try: newconn, connaddr = self.sock.accept() if support.verbose and self.chatty: sys.stdout.write(' server: new connection from ' + repr(connaddr) + '\n') handler = self.ConnectionHandler(self, newconn, connaddr) handler.start() handler.join() except socket.timeout: pass except KeyboardInterrupt: self.stop() self.sock.close() def stop(self): self.active = False class AsyncoreEchoServer(threading.Thread): # this one's based on asyncore.dispatcher class EchoServer (asyncore.dispatcher): class ConnectionHandler (asyncore.dispatcher_with_send): def __init__(self, conn, certfile): self.socket = ssl.wrap_socket(conn, server_side=True, certfile=certfile, do_handshake_on_connect=False) asyncore.dispatcher_with_send.__init__(self, self.socket) self._ssl_accepting = True self._do_ssl_handshake() def readable(self): if isinstance(self.socket, ssl.SSLSocket): while self.socket.pending() > 0: self.handle_read_event() return True def _do_ssl_handshake(self): try: self.socket.do_handshake() except (ssl.SSLWantReadError, ssl.SSLWantWriteError): return except ssl.SSLEOFError: return self.handle_close() except ssl.SSLError: raise except socket.error as err: if err.args[0] == errno.ECONNABORTED: return self.handle_close() else: self._ssl_accepting = False def handle_read(self): if self._ssl_accepting: self._do_ssl_handshake() else: data = self.recv(1024) if support.verbose: sys.stdout.write(" server: read %s from client\n" % repr(data)) if not data: self.close() else: self.send(data.lower()) def handle_close(self): self.close() if support.verbose: sys.stdout.write(" server: closed connection %s\n" % self.socket) def handle_error(self): raise def __init__(self, certfile): self.certfile = certfile sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) self.port = support.bind_port(sock, '') asyncore.dispatcher.__init__(self, sock) self.listen(5) def handle_accepted(self, sock_obj, addr): if support.verbose: sys.stdout.write(" server: new connection from %s:%s\n" %addr) self.ConnectionHandler(sock_obj, self.certfile) def handle_error(self): raise def __init__(self, certfile): self.flag = None self.active = False self.server = self.EchoServer(certfile) self.port = self.server.port threading.Thread.__init__(self) self.daemon = True def __str__(self): return "<%s %s>" % (self.__class__.__name__, self.server) def __enter__(self): self.start(threading.Event()) self.flag.wait() return self def __exit__(self, *args): if support.verbose: sys.stdout.write(" cleanup: stopping server.\n") self.stop() if support.verbose: sys.stdout.write(" cleanup: joining server thread.\n") self.join() if support.verbose: sys.stdout.write(" cleanup: successfully joined.\n") def start (self, flag=None): self.flag = flag threading.Thread.start(self) def run(self): self.active = True if self.flag: self.flag.set() while self.active: try: asyncore.loop(1) except: pass def stop(self): self.active = False self.server.close() def bad_cert_test(certfile): """ Launch a server with CERT_REQUIRED, and check that trying to connect to it with the given client certificate fails. """ server = ThreadedEchoServer(CERTFILE, certreqs=ssl.CERT_REQUIRED, cacerts=CERTFILE, chatty=False, connectionchatty=False) with server: try: with socket.socket() as sock: s = ssl.wrap_socket(sock, certfile=certfile, ssl_version=ssl.PROTOCOL_TLSv1) s.connect((HOST, server.port)) except ssl.SSLError as x: if support.verbose: sys.stdout.write("\nSSLError is %s\n" % x.args[1]) except socket.error as x: if support.verbose: sys.stdout.write("\nsocket.error is %s\n" % x.args[1]) except IOError as x: if x.errno != errno.ENOENT: raise if support.verbose: sys.stdout.write("\IOError is %s\n" % str(x)) else: raise AssertionError("Use of invalid cert should have failed!") def server_params_test(client_context, server_context, indata=b"FOO\n", chatty=True, connectionchatty=False): """ Launch a server, connect a client to it and try various reads and writes. """ stats = {} server = ThreadedEchoServer(context=server_context, chatty=chatty, connectionchatty=False) with server: with client_context.wrap_socket(socket.socket()) as s: s.connect((HOST, server.port)) for arg in [indata, bytearray(indata), memoryview(indata)]: if connectionchatty: if support.verbose: sys.stdout.write( " client: sending %r...\n" % indata) s.write(arg) outdata = s.read() if connectionchatty: if support.verbose: sys.stdout.write(" client: read %r\n" % outdata) if outdata != indata.lower(): raise AssertionError( "bad data <<%r>> (%d) received; expected <<%r>> (%d)\n" % (outdata[:20], len(outdata), indata[:20].lower(), len(indata))) s.write(b"over\n") if connectionchatty: if support.verbose: sys.stdout.write(" client: closing connection.\n") stats.update({ 'compression': s.compression(), 'cipher': s.cipher(), 'client_npn_protocol': s.selected_npn_protocol() }) s.close() stats['server_npn_protocols'] = server.selected_protocols return stats def try_protocol_combo(server_protocol, client_protocol, expect_success, certsreqs=None, server_options=0, client_options=0): if certsreqs is None: certsreqs = ssl.CERT_NONE certtype = { ssl.CERT_NONE: "CERT_NONE", ssl.CERT_OPTIONAL: "CERT_OPTIONAL", ssl.CERT_REQUIRED: "CERT_REQUIRED", }[certsreqs] if support.verbose: formatstr = (expect_success and " %s->%s %s\n") or " {%s->%s} %s\n" sys.stdout.write(formatstr % (ssl.get_protocol_name(client_protocol), ssl.get_protocol_name(server_protocol), certtype)) client_context = ssl.SSLContext(client_protocol) client_context.options = ssl.OP_ALL | client_options server_context = ssl.SSLContext(server_protocol) server_context.options = ssl.OP_ALL | server_options for ctx in (client_context, server_context): ctx.verify_mode = certsreqs # NOTE: we must enable "ALL" ciphers, otherwise an SSLv23 client # will send an SSLv3 hello (rather than SSLv2) starting from # OpenSSL 1.0.0 (see issue #8322). ctx.set_ciphers("ALL") ctx.load_cert_chain(CERTFILE) ctx.load_verify_locations(CERTFILE) try: server_params_test(client_context, server_context, chatty=False, connectionchatty=False) # Protocol mismatch can result in either an SSLError, or a # "Connection reset by peer" error. except ssl.SSLError: if expect_success: raise except socket.error as e: if expect_success or e.errno != errno.ECONNRESET: raise else: if not expect_success: raise AssertionError( "Client protocol %s succeeded with server protocol %s!" % (ssl.get_protocol_name(client_protocol), ssl.get_protocol_name(server_protocol))) class ThreadedTests(unittest.TestCase): @skip_if_broken_ubuntu_ssl def test_echo(self): """Basic test of an SSL client connecting to a server""" if support.verbose: sys.stdout.write("\n") for protocol in PROTOCOLS: context = ssl.SSLContext(protocol) context.load_cert_chain(CERTFILE) server_params_test(context, context, chatty=True, connectionchatty=True) def test_getpeercert(self): if support.verbose: sys.stdout.write("\n") context = ssl.SSLContext(ssl.PROTOCOL_SSLv23) context.verify_mode = ssl.CERT_REQUIRED context.load_verify_locations(CERTFILE) context.load_cert_chain(CERTFILE) server = ThreadedEchoServer(context=context, chatty=False) with server: s = context.wrap_socket(socket.socket()) s.connect((HOST, server.port)) cert = s.getpeercert() self.assertTrue(cert, "Can't get peer certificate.") cipher = s.cipher() if support.verbose: sys.stdout.write(pprint.pformat(cert) + '\n') sys.stdout.write("Connection cipher is " + str(cipher) + '.\n') if 'subject' not in cert: self.fail("No subject field in certificate: %s." % pprint.pformat(cert)) if ((('organizationName', 'Python Software Foundation'),) not in cert['subject']): self.fail( "Missing or invalid 'organizationName' field in certificate subject; " "should be 'Python Software Foundation'.") self.assertIn('notBefore', cert) self.assertIn('notAfter', cert) before = ssl.cert_time_to_seconds(cert['notBefore']) after = ssl.cert_time_to_seconds(cert['notAfter']) self.assertLess(before, after) s.close() def test_empty_cert(self): """Connecting with an empty cert file""" bad_cert_test(os.path.join(os.path.dirname(__file__) or os.curdir, "nullcert.pem")) def test_malformed_cert(self): """Connecting with a badly formatted certificate (syntax error)""" bad_cert_test(os.path.join(os.path.dirname(__file__) or os.curdir, "badcert.pem")) def test_nonexisting_cert(self): """Connecting with a non-existing cert file""" bad_cert_test(os.path.join(os.path.dirname(__file__) or os.curdir, "wrongcert.pem")) def test_malformed_key(self): """Connecting with a badly formatted key (syntax error)""" bad_cert_test(os.path.join(os.path.dirname(__file__) or os.curdir, "badkey.pem")) def test_rude_shutdown(self): """A brutal shutdown of an SSL server should raise an IOError in the client when attempting handshake. """ listener_ready = threading.Event() listener_gone = threading.Event() s = socket.socket() port = support.bind_port(s, HOST) # `listener` runs in a thread. It sits in an accept() until # the main thread connects. Then it rudely closes the socket, # and sets Event `listener_gone` to let the main thread know # the socket is gone. def listener(): s.listen(5) listener_ready.set() newsock, addr = s.accept() newsock.close() s.close() listener_gone.set() def connector(): listener_ready.wait() with socket.socket() as c: c.connect((HOST, port)) listener_gone.wait() try: ssl_sock = ssl.wrap_socket(c) except IOError: pass else: self.fail('connecting to closed SSL socket should have failed') t = threading.Thread(target=listener) t.start() try: connector() finally: t.join() @skip_if_broken_ubuntu_ssl @unittest.skipUnless(hasattr(ssl, 'PROTOCOL_SSLv2'), "OpenSSL is compiled without SSLv2 support") def test_protocol_sslv2(self): """Connecting to an SSLv2 server with various client options""" if support.verbose: sys.stdout.write("\n") try_protocol_combo(ssl.PROTOCOL_SSLv2, ssl.PROTOCOL_SSLv2, True) try_protocol_combo(ssl.PROTOCOL_SSLv2, ssl.PROTOCOL_SSLv2, True, ssl.CERT_OPTIONAL) try_protocol_combo(ssl.PROTOCOL_SSLv2, ssl.PROTOCOL_SSLv2, True, ssl.CERT_REQUIRED) try_protocol_combo(ssl.PROTOCOL_SSLv2, ssl.PROTOCOL_SSLv23, True) try_protocol_combo(ssl.PROTOCOL_SSLv2, ssl.PROTOCOL_SSLv3, False) try_protocol_combo(ssl.PROTOCOL_SSLv2, ssl.PROTOCOL_TLSv1, False) # SSLv23 client with specific SSL options if no_sslv2_implies_sslv3_hello(): # No SSLv2 => client will use an SSLv3 hello on recent OpenSSLs try_protocol_combo(ssl.PROTOCOL_SSLv2, ssl.PROTOCOL_SSLv23, False, client_options=ssl.OP_NO_SSLv2) try_protocol_combo(ssl.PROTOCOL_SSLv2, ssl.PROTOCOL_SSLv23, True, client_options=ssl.OP_NO_SSLv3) try_protocol_combo(ssl.PROTOCOL_SSLv2, ssl.PROTOCOL_SSLv23, True, client_options=ssl.OP_NO_TLSv1) @skip_if_broken_ubuntu_ssl def test_protocol_sslv23(self): """Connecting to an SSLv23 server with various client options""" if support.verbose: sys.stdout.write("\n") if hasattr(ssl, 'PROTOCOL_SSLv2'): try: try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv2, True) except (ssl.SSLError, socket.error) as x: # this fails on some older versions of OpenSSL (0.9.7l, for instance) if support.verbose: sys.stdout.write( " SSL2 client to SSL23 server test unexpectedly failed:\n %s\n" % str(x)) try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv3, True) try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv23, True) try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_TLSv1, True) try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv3, True, ssl.CERT_OPTIONAL) try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv23, True, ssl.CERT_OPTIONAL) try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_TLSv1, True, ssl.CERT_OPTIONAL) try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv3, True, ssl.CERT_REQUIRED) try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv23, True, ssl.CERT_REQUIRED) try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_TLSv1, True, ssl.CERT_REQUIRED) # Server with specific SSL options try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv3, False, server_options=ssl.OP_NO_SSLv3) # Will choose TLSv1 try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv23, True, server_options=ssl.OP_NO_SSLv2 | ssl.OP_NO_SSLv3) try_protocol_combo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_TLSv1, False, server_options=ssl.OP_NO_TLSv1) @skip_if_broken_ubuntu_ssl def test_protocol_sslv3(self): """Connecting to an SSLv3 server with various client options""" if support.verbose: sys.stdout.write("\n") try_protocol_combo(ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_SSLv3, True) try_protocol_combo(ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_SSLv3, True, ssl.CERT_OPTIONAL) try_protocol_combo(ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_SSLv3, True, ssl.CERT_REQUIRED) if hasattr(ssl, 'PROTOCOL_SSLv2'): try_protocol_combo(ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_SSLv2, False) try_protocol_combo(ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_SSLv23, False, client_options=ssl.OP_NO_SSLv3) try_protocol_combo(ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_TLSv1, False) if no_sslv2_implies_sslv3_hello(): # No SSLv2 => client will use an SSLv3 hello on recent OpenSSLs try_protocol_combo(ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_SSLv23, True, client_options=ssl.OP_NO_SSLv2) @skip_if_broken_ubuntu_ssl def test_protocol_tlsv1(self): """Connecting to a TLSv1 server with various client options""" if support.verbose: sys.stdout.write("\n") try_protocol_combo(ssl.PROTOCOL_TLSv1, ssl.PROTOCOL_TLSv1, True) try_protocol_combo(ssl.PROTOCOL_TLSv1, ssl.PROTOCOL_TLSv1, True, ssl.CERT_OPTIONAL) try_protocol_combo(ssl.PROTOCOL_TLSv1, ssl.PROTOCOL_TLSv1, True, ssl.CERT_REQUIRED) if hasattr(ssl, 'PROTOCOL_SSLv2'): try_protocol_combo(ssl.PROTOCOL_TLSv1, ssl.PROTOCOL_SSLv2, False) try_protocol_combo(ssl.PROTOCOL_TLSv1, ssl.PROTOCOL_SSLv3, False) try_protocol_combo(ssl.PROTOCOL_TLSv1, ssl.PROTOCOL_SSLv23, False, client_options=ssl.OP_NO_TLSv1) def test_starttls(self): """Switching from clear text to encrypted and back again.""" msgs = (b"msg 1", b"MSG 2", b"STARTTLS", b"MSG 3", b"msg 4", b"ENDTLS", b"msg 5", b"msg 6") server = ThreadedEchoServer(CERTFILE, ssl_version=ssl.PROTOCOL_TLSv1, starttls_server=True, chatty=True, connectionchatty=True) wrapped = False with server: s = socket.socket() s.setblocking(1) s.connect((HOST, server.port)) if support.verbose: sys.stdout.write("\n") for indata in msgs: if support.verbose: sys.stdout.write( " client: sending %r...\n" % indata) if wrapped: conn.write(indata) outdata = conn.read() else: s.send(indata) outdata = s.recv(1024) msg = outdata.strip().lower() if indata == b"STARTTLS" and msg.startswith(b"ok"): # STARTTLS ok, switch to secure mode if support.verbose: sys.stdout.write( " client: read %r from server, starting TLS...\n" % msg) conn = ssl.wrap_socket(s, ssl_version=ssl.PROTOCOL_TLSv1) wrapped = True elif indata == b"ENDTLS" and msg.startswith(b"ok"): # ENDTLS ok, switch back to clear text if support.verbose: sys.stdout.write( " client: read %r from server, ending TLS...\n" % msg) s = conn.unwrap() wrapped = False else: if support.verbose: sys.stdout.write( " client: read %r from server\n" % msg) if support.verbose: sys.stdout.write(" client: closing connection.\n") if wrapped: conn.write(b"over\n") else: s.send(b"over\n") if wrapped: conn.close() else: s.close() def test_socketserver(self): """Using a SocketServer to create and manage SSL connections.""" server = make_https_server(self, CERTFILE) # try to connect if support.verbose: sys.stdout.write('\n') with open(CERTFILE, 'rb') as f: d1 = f.read() d2 = '' # now fetch the same data from the HTTPS server url = 'https://%s:%d/%s' % ( HOST, server.port, os.path.split(CERTFILE)[1]) f = urllib.request.urlopen(url) try: dlen = f.info().get("content-length") if dlen and (int(dlen) > 0): d2 = f.read(int(dlen)) if support.verbose: sys.stdout.write( " client: read %d bytes from remote server '%s'\n" % (len(d2), server)) finally: f.close() self.assertEqual(d1, d2) def test_asyncore_server(self): """Check the example asyncore integration.""" indata = "TEST MESSAGE of mixed case\n" if support.verbose: sys.stdout.write("\n") indata = b"FOO\n" server = AsyncoreEchoServer(CERTFILE) with server: s = ssl.wrap_socket(socket.socket()) s.connect(('127.0.0.1', server.port)) if support.verbose: sys.stdout.write( " client: sending %r...\n" % indata) s.write(indata) outdata = s.read() if support.verbose: sys.stdout.write(" client: read %r\n" % outdata) if outdata != indata.lower(): self.fail( "bad data <<%r>> (%d) received; expected <<%r>> (%d)\n" % (outdata[:20], len(outdata), indata[:20].lower(), len(indata))) s.write(b"over\n") if support.verbose: sys.stdout.write(" client: closing connection.\n") s.close() if support.verbose: sys.stdout.write(" client: connection closed.\n") def test_recv_send(self): """Test recv(), send() and friends.""" if support.verbose: sys.stdout.write("\n") server = ThreadedEchoServer(CERTFILE, certreqs=ssl.CERT_NONE, ssl_version=ssl.PROTOCOL_TLSv1, cacerts=CERTFILE, chatty=True, connectionchatty=False) with server: s = ssl.wrap_socket(socket.socket(), server_side=False, certfile=CERTFILE, ca_certs=CERTFILE, cert_reqs=ssl.CERT_NONE, ssl_version=ssl.PROTOCOL_TLSv1) s.connect((HOST, server.port)) # helper methods for standardising recv* method signatures def _recv_into(): b = bytearray(b"\0"*100) count = s.recv_into(b) return b[:count] def _recvfrom_into(): b = bytearray(b"\0"*100) count, addr = s.recvfrom_into(b) return b[:count] # (name, method, whether to expect success, *args) send_methods = [ ('send', s.send, True, []), ('sendto', s.sendto, False, ["some.address"]), ('sendall', s.sendall, True, []), ] recv_methods = [ ('recv', s.recv, True, []), ('recvfrom', s.recvfrom, False, ["some.address"]), ('recv_into', _recv_into, True, []), ('recvfrom_into', _recvfrom_into, False, []), ] data_prefix = "PREFIX_" for meth_name, send_meth, expect_success, args in send_methods: indata = (data_prefix + meth_name).encode('ascii') try: send_meth(indata, *args) outdata = s.read() if outdata != indata.lower(): self.fail( "While sending with <<{name:s}>> bad data " "<<{outdata:r}>> ({nout:d}) received; " "expected <<{indata:r}>> ({nin:d})\n".format( name=meth_name, outdata=outdata[:20], nout=len(outdata), indata=indata[:20], nin=len(indata) ) ) except ValueError as e: if expect_success: self.fail( "Failed to send with method <<{name:s}>>; " "expected to succeed.\n".format(name=meth_name) ) if not str(e).startswith(meth_name): self.fail( "Method <<{name:s}>> failed with unexpected " "exception message: {exp:s}\n".format( name=meth_name, exp=e ) ) for meth_name, recv_meth, expect_success, args in recv_methods: indata = (data_prefix + meth_name).encode('ascii') try: s.send(indata) outdata = recv_meth(*args) if outdata != indata.lower(): self.fail( "While receiving with <<{name:s}>> bad data " "<<{outdata:r}>> ({nout:d}) received; " "expected <<{indata:r}>> ({nin:d})\n".format( name=meth_name, outdata=outdata[:20], nout=len(outdata), indata=indata[:20], nin=len(indata) ) ) except ValueError as e: if expect_success: self.fail( "Failed to receive with method <<{name:s}>>; " "expected to succeed.\n".format(name=meth_name) ) if not str(e).startswith(meth_name): self.fail( "Method <<{name:s}>> failed with unexpected " "exception message: {exp:s}\n".format( name=meth_name, exp=e ) ) # consume data s.read() # Make sure sendmsg et al are disallowed to avoid # inadvertent disclosure of data and/or corruption # of the encrypted data stream self.assertRaises(NotImplementedError, s.sendmsg, [b"data"]) self.assertRaises(NotImplementedError, s.recvmsg, 100) self.assertRaises(NotImplementedError, s.recvmsg_into, bytearray(100)) s.write(b"over\n") s.close() def test_handshake_timeout(self): # Issue #5103: SSL handshake must respect the socket timeout server = socket.socket(socket.AF_INET) host = "127.0.0.1" port = support.bind_port(server) started = threading.Event() finish = False def serve(): server.listen(5) started.set() conns = [] while not finish: r, w, e = select.select([server], [], [], 0.1) if server in r: # Let the socket hang around rather than having # it closed by garbage collection. conns.append(server.accept()[0]) for sock in conns: sock.close() t = threading.Thread(target=serve) t.start() started.wait() try: try: c = socket.socket(socket.AF_INET) c.settimeout(0.2) c.connect((host, port)) # Will attempt handshake and time out self.assertRaisesRegex(socket.timeout, "timed out", ssl.wrap_socket, c) finally: c.close() try: c = socket.socket(socket.AF_INET) c = ssl.wrap_socket(c) c.settimeout(0.2) # Will attempt handshake and time out self.assertRaisesRegex(socket.timeout, "timed out", c.connect, (host, port)) finally: c.close() finally: finish = True t.join() server.close() def test_default_ciphers(self): context = ssl.SSLContext(ssl.PROTOCOL_SSLv23) try: # Force a set of weak ciphers on our client context context.set_ciphers("DES") except ssl.SSLError: self.skipTest("no DES cipher available") with ThreadedEchoServer(CERTFILE, ssl_version=ssl.PROTOCOL_SSLv23, chatty=False) as server: with socket.socket() as sock: s = context.wrap_socket(sock) with self.assertRaises((OSError, ssl.SSLError)): s.connect((HOST, server.port)) self.assertIn("no shared cipher", str(server.conn_errors[0])) @unittest.skipUnless("tls-unique" in ssl.CHANNEL_BINDING_TYPES, "'tls-unique' channel binding not available") def test_tls_unique_channel_binding(self): """Test tls-unique channel binding.""" if support.verbose: sys.stdout.write("\n") server = ThreadedEchoServer(CERTFILE, certreqs=ssl.CERT_NONE, ssl_version=ssl.PROTOCOL_TLSv1, cacerts=CERTFILE, chatty=True, connectionchatty=False) with server: s = ssl.wrap_socket(socket.socket(), server_side=False, certfile=CERTFILE, ca_certs=CERTFILE, cert_reqs=ssl.CERT_NONE, ssl_version=ssl.PROTOCOL_TLSv1) s.connect((HOST, server.port)) # get the data cb_data = s.get_channel_binding("tls-unique") if support.verbose: sys.stdout.write(" got channel binding data: {0!r}\n" .format(cb_data)) # check if it is sane self.assertIsNotNone(cb_data) self.assertEqual(len(cb_data), 12) # True for TLSv1 # and compare with the peers version s.write(b"CB tls-unique\n") peer_data_repr = s.read().strip() self.assertEqual(peer_data_repr, repr(cb_data).encode("us-ascii")) s.close() # now, again s = ssl.wrap_socket(socket.socket(), server_side=False, certfile=CERTFILE, ca_certs=CERTFILE, cert_reqs=ssl.CERT_NONE, ssl_version=ssl.PROTOCOL_TLSv1) s.connect((HOST, server.port)) new_cb_data = s.get_channel_binding("tls-unique") if support.verbose: sys.stdout.write(" got another channel binding data: {0!r}\n" .format(new_cb_data)) # is it really unique self.assertNotEqual(cb_data, new_cb_data) self.assertIsNotNone(cb_data) self.assertEqual(len(cb_data), 12) # True for TLSv1 s.write(b"CB tls-unique\n") peer_data_repr = s.read().strip() self.assertEqual(peer_data_repr, repr(new_cb_data).encode("us-ascii")) s.close() def test_compression(self): context = ssl.SSLContext(ssl.PROTOCOL_TLSv1) context.load_cert_chain(CERTFILE) stats = server_params_test(context, context, chatty=True, connectionchatty=True) if support.verbose: sys.stdout.write(" got compression: {!r}\n".format(stats['compression'])) self.assertIn(stats['compression'], { None, 'ZLIB', 'RLE' }) @unittest.skipUnless(hasattr(ssl, 'OP_NO_COMPRESSION'), "ssl.OP_NO_COMPRESSION needed for this test") def test_compression_disabled(self): context = ssl.SSLContext(ssl.PROTOCOL_TLSv1) context.load_cert_chain(CERTFILE) context.options |= ssl.OP_NO_COMPRESSION stats = server_params_test(context, context, chatty=True, connectionchatty=True) self.assertIs(stats['compression'], None) def test_dh_params(self): # Check we can get a connection with ephemeral Diffie-Hellman context = ssl.SSLContext(ssl.PROTOCOL_TLSv1) context.load_cert_chain(CERTFILE) context.load_dh_params(DHFILE) context.set_ciphers("kEDH") stats = server_params_test(context, context, chatty=True, connectionchatty=True) cipher = stats["cipher"][0] parts = cipher.split("-") if "ADH" not in parts and "EDH" not in parts and "DHE" not in parts: self.fail("Non-DH cipher: " + cipher[0]) def test_selected_npn_protocol(self): # selected_npn_protocol() is None unless NPN is used context = ssl.SSLContext(ssl.PROTOCOL_TLSv1) context.load_cert_chain(CERTFILE) stats = server_params_test(context, context, chatty=True, connectionchatty=True) self.assertIs(stats['client_npn_protocol'], None) @unittest.skipUnless(ssl.HAS_NPN, "NPN support needed for this test") def test_npn_protocols(self): server_protocols = ['http/1.1', 'spdy/2'] protocol_tests = [ (['http/1.1', 'spdy/2'], 'http/1.1'), (['spdy/2', 'http/1.1'], 'http/1.1'), (['spdy/2', 'test'], 'spdy/2'), (['abc', 'def'], 'abc') ] for client_protocols, expected in protocol_tests: server_context = ssl.SSLContext(ssl.PROTOCOL_TLSv1) server_context.load_cert_chain(CERTFILE) server_context.set_npn_protocols(server_protocols) client_context = ssl.SSLContext(ssl.PROTOCOL_TLSv1) client_context.load_cert_chain(CERTFILE) client_context.set_npn_protocols(client_protocols) stats = server_params_test(client_context, server_context, chatty=True, connectionchatty=True) msg = "failed trying %s (s) and %s (c).\n" \ "was expecting %s, but got %%s from the %%s" \ % (str(server_protocols), str(client_protocols), str(expected)) client_result = stats['client_npn_protocol'] self.assertEqual(client_result, expected, msg % (client_result, "client")) server_result = stats['server_npn_protocols'][-1] \ if len(stats['server_npn_protocols']) else 'nothing' self.assertEqual(server_result, expected, msg % (server_result, "server")) def test_main(verbose=False): if support.verbose: plats = { 'Linux': platform.linux_distribution, 'Mac': platform.mac_ver, 'Windows': platform.win32_ver, } for name, func in plats.items(): plat = func() if plat and plat[0]: plat = '%s %r' % (name, plat) break else: plat = repr(platform.platform()) print("test_ssl: testing with %r %r" % (ssl.OPENSSL_VERSION, ssl.OPENSSL_VERSION_INFO)) print(" under %s" % plat) print(" HAS_SNI = %r" % ssl.HAS_SNI) for filename in [ CERTFILE, SVN_PYTHON_ORG_ROOT_CERT, BYTES_CERTFILE, ONLYCERT, ONLYKEY, BYTES_ONLYCERT, BYTES_ONLYKEY, BADCERT, BADKEY, EMPTYCERT]: if not os.path.exists(filename): raise support.TestFailed("Can't read certificate file %r" % filename) tests = [ContextTests, BasicSocketTests, SSLErrorTests] if support.is_resource_enabled('network'): tests.append(NetworkedTests) if _have_threads: thread_info = support.threading_setup() if thread_info and support.is_resource_enabled('network'): tests.append(ThreadedTests) try: support.run_unittest(*tests) finally: if _have_threads: support.threading_cleanup(*thread_info) if __name__ == "__main__": test_main()