# 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_SSLv2, ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_TLSv1 ] 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) 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") 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_VERSION_INFO >= (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): @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 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 self.assertIn(ssl.HAS_SNI, {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")) 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") 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') # 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") class ContextTests(unittest.TestCase): @skip_if_broken_ubuntu_ssl def test_constructor(self): 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) 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) @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() 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.SSLError as err: if err.args[0] == ssl.SSL_ERROR_WANT_READ: select.select([s], [], [], 5.0) elif err.args[0] == ssl.SSL_ERROR_WANT_WRITE: select.select([], [s], [], 5.0) else: raise # SSL established self.assertTrue(s.getpeercert()) 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.SSLError as err: if err.args[0] == ssl.SSL_ERROR_WANT_READ: select.select([s], [], []) elif err.args[0] == ssl.SSL_ERROR_WANT_WRITE: select.select([], [s], []) else: raise 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) # 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"): s = ssl.wrap_socket(socket.socket(socket.AF_INET), cert_reqs=ssl.CERT_REQUIRED, ca_certs=sha256_cert,) 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) except ssl.SSLError: # 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. 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") 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") 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, 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 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 threading.Thread.__init__(self) self.daemon = True 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() 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.SSLError as err: if err.args[0] in (ssl.SSL_ERROR_WANT_READ, ssl.SSL_ERROR_WANT_WRITE): return elif err.args[0] == ssl.SSL_ERROR_EOF: return self.handle_close() 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 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) flag = threading.Event() server.start(flag) # wait for it to start flag.wait() # try to connect try: 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!") finally: server.stop() server.join() 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. """ server = ThreadedEchoServer(context=server_context, chatty=chatty, connectionchatty=False) flag = threading.Event() server.start(flag) # wait for it to start flag.wait() # try to connect try: s = client_context.wrap_socket(socket.socket()) 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") s.close() finally: server.stop() server.join() 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) flag = threading.Event() server.start(flag) # wait for it to start flag.wait() # try to connect try: 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() finally: server.stop() server.join() 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 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") 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) try_protocol_combo(ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_SSLv2, False) try_protocol_combo(ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_SSLv23, False) 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) 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) 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) flag = threading.Event() server.start(flag) # wait for it to start flag.wait() # try to connect wrapped = False try: 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() finally: server.stop() server.join() 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) flag = threading.Event() server.start(flag) # wait for it to start flag.wait() # try to connect try: 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") finally: if support.verbose: sys.stdout.write(" cleanup: stopping server.\n") server.stop() if support.verbose: sys.stdout.write(" cleanup: joining server thread.\n") server.join() if support.verbose: sys.stdout.write(" cleanup: successfully joined.\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) flag = threading.Event() server.start(flag) # wait for it to start flag.wait() # try to connect 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)) try: # 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() s.write(b"over\n") s.close() finally: server.stop() server.join() 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_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] 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()