12 from test import test_support
19 HOST = test_support.HOST
21 def server(evt, buf, serv):
25 conn, addr = serv.accept()
26 except socket.timeout:
31 r, w, e = select.select([], [conn], [])
43 @unittest.skipUnless(threading, 'Threading required for this test.')
44 class GeneralTests(unittest.TestCase):
47 self._threads = test_support.threading_setup()
48 self.evt = threading.Event()
49 self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
50 self.sock.settimeout(15)
51 self.port = test_support.bind_port(self.sock)
52 servargs = (self.evt, "220 Hola mundo\n", self.sock)
53 self.thread = threading.Thread(target=server, args=servargs)
61 test_support.threading_cleanup(*self._threads)
65 smtp = smtplib.SMTP(HOST, self.port)
69 # connects, include port in host name
70 smtp = smtplib.SMTP("%s:%s" % (HOST, self.port))
73 def testLocalHostName(self):
74 # check that supplied local_hostname is used
75 smtp = smtplib.SMTP(HOST, self.port, local_hostname="testhost")
76 self.assertEqual(smtp.local_hostname, "testhost")
79 def testTimeoutDefault(self):
80 self.assertTrue(socket.getdefaulttimeout() is None)
81 socket.setdefaulttimeout(30)
83 smtp = smtplib.SMTP(HOST, self.port)
85 socket.setdefaulttimeout(None)
86 self.assertEqual(smtp.sock.gettimeout(), 30)
89 def testTimeoutNone(self):
90 self.assertTrue(socket.getdefaulttimeout() is None)
91 socket.setdefaulttimeout(30)
93 smtp = smtplib.SMTP(HOST, self.port, timeout=None)
95 socket.setdefaulttimeout(None)
96 self.assertTrue(smtp.sock.gettimeout() is None)
99 def testTimeoutValue(self):
100 smtp = smtplib.SMTP(HOST, self.port, timeout=30)
101 self.assertEqual(smtp.sock.gettimeout(), 30)
105 # Test server thread using the specified SMTP server class
106 def debugging_server(serv, serv_evt, client_evt):
110 if hasattr(select, 'poll'):
111 poll_fun = asyncore.poll2
113 poll_fun = asyncore.poll
116 while asyncore.socket_map and n > 0:
117 poll_fun(0.01, asyncore.socket_map)
119 # when the client conversation is finished, it will
120 # set client_evt, and it's then ok to kill the server
121 if client_evt.is_set():
127 except socket.timeout:
130 if not client_evt.is_set():
131 # allow some time for the client to read the result
137 MSG_BEGIN = '---------- MESSAGE FOLLOWS ----------\n'
138 MSG_END = '------------ END MESSAGE ------------\n'
140 # NOTE: Some SMTP objects in the tests below are created with a non-default
141 # local_hostname argument to the constructor, since (on some systems) the FQDN
142 # lookup caused by the default local_hostname sometimes takes so long that the
143 # test server times out, causing the test to fail.
145 # Test behavior of smtpd.DebuggingServer
146 @unittest.skipUnless(threading, 'Threading required for this test.')
147 class DebuggingServerTests(unittest.TestCase):
150 # temporarily replace sys.stdout to capture DebuggingServer output
151 self.old_stdout = sys.stdout
152 self.output = StringIO.StringIO()
153 sys.stdout = self.output
155 self._threads = test_support.threading_setup()
156 self.serv_evt = threading.Event()
157 self.client_evt = threading.Event()
158 # Pick a random unused port by passing 0 for the port number
159 self.serv = smtpd.DebuggingServer((HOST, 0), ('nowhere', -1))
160 # Keep a note of what port was assigned
161 self.port = self.serv.socket.getsockname()[1]
162 serv_args = (self.serv, self.serv_evt, self.client_evt)
163 self.thread = threading.Thread(target=debugging_server, args=serv_args)
166 # wait until server thread has assigned a port number
168 self.serv_evt.clear()
171 # indicate that the client is finished
172 self.client_evt.set()
173 # wait for the server thread to terminate
176 test_support.threading_cleanup(*self._threads)
178 sys.stdout = self.old_stdout
182 smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
186 smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
187 expected = (250, 'Ok')
188 self.assertEqual(smtp.noop(), expected)
192 smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
193 expected = (250, 'Ok')
194 self.assertEqual(smtp.rset(), expected)
197 def testNotImplemented(self):
198 # EHLO isn't implemented in DebuggingServer
199 smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
200 expected = (502, 'Error: command "EHLO" not implemented')
201 self.assertEqual(smtp.ehlo(), expected)
205 # VRFY isn't implemented in DebuggingServer
206 smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
207 expected = (502, 'Error: command "VRFY" not implemented')
208 self.assertEqual(smtp.vrfy('nobody@nowhere.com'), expected)
209 self.assertEqual(smtp.verify('nobody@nowhere.com'), expected)
212 def testSecondHELO(self):
213 # check that a second HELO returns a message that it's a duplicate
214 # (this behavior is specific to smtpd.SMTPChannel)
215 smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
217 expected = (503, 'Duplicate HELO/EHLO')
218 self.assertEqual(smtp.helo(), expected)
222 smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
223 self.assertEqual(smtp.help(), 'Error: command "HELP" not implemented')
227 # connect and send mail
229 smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
230 smtp.sendmail('John', 'Sally', m)
231 # XXX(nnorwitz): this test is flaky and dies with a bad file descriptor
232 # in asyncore. This sleep might help, but should really be fixed
233 # properly by using an Event variable.
237 self.client_evt.set()
240 mexpect = '%s%s\n%s' % (MSG_BEGIN, m, MSG_END)
241 self.assertEqual(self.output.getvalue(), mexpect)
244 class NonConnectingTests(unittest.TestCase):
246 def testNotConnected(self):
247 # Test various operations on an unconnected SMTP object that
248 # should raise exceptions (at present the attempt in SMTP.send
249 # to reference the nonexistent 'sock' attribute of the SMTP object
250 # causes an AttributeError)
251 smtp = smtplib.SMTP()
252 self.assertRaises(smtplib.SMTPServerDisconnected, smtp.ehlo)
253 self.assertRaises(smtplib.SMTPServerDisconnected,
254 smtp.send, 'test msg')
256 def testNonnumericPort(self):
257 # check that non-numeric port raises socket.error
258 self.assertRaises(socket.error, smtplib.SMTP,
259 "localhost", "bogus")
260 self.assertRaises(socket.error, smtplib.SMTP,
264 # test response of client to a non-successful HELO message
265 @unittest.skipUnless(threading, 'Threading required for this test.')
266 class BadHELOServerTests(unittest.TestCase):
269 self.old_stdout = sys.stdout
270 self.output = StringIO.StringIO()
271 sys.stdout = self.output
273 self._threads = test_support.threading_setup()
274 self.evt = threading.Event()
275 self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
276 self.sock.settimeout(15)
277 self.port = test_support.bind_port(self.sock)
278 servargs = (self.evt, "199 no hello for you!\n", self.sock)
279 self.thread = threading.Thread(target=server, args=servargs)
287 test_support.threading_cleanup(*self._threads)
288 sys.stdout = self.old_stdout
290 def testFailingHELO(self):
291 self.assertRaises(smtplib.SMTPConnectError, smtplib.SMTP,
292 HOST, self.port, 'localhost', 3)
295 sim_users = {'Mr.A@somewhere.com':'John A',
296 'Ms.B@somewhere.com':'Sally B',
297 'Mrs.C@somewhereesle.com':'Ruth C',
300 sim_auth = ('Mr.A@somewhere.com', 'somepassword')
301 sim_cram_md5_challenge = ('PENCeUxFREJoU0NnbmhNWitOMjNGNn'
302 'dAZWx3b29kLmlubm9zb2Z0LmNvbT4=')
303 sim_auth_credentials = {
304 'login': 'TXIuQUBzb21ld2hlcmUuY29t',
305 'plain': 'AE1yLkFAc29tZXdoZXJlLmNvbQBzb21lcGFzc3dvcmQ=',
306 'cram-md5': ('TXIUQUBZB21LD2HLCMUUY29TIDG4OWQ0MJ'
307 'KWZGQ4ODNMNDA4NTGXMDRLZWMYZJDMODG1'),
309 sim_auth_login_password = 'C29TZXBHC3N3B3JK'
311 sim_lists = {'list-1':['Mr.A@somewhere.com','Mrs.C@somewhereesle.com'],
312 'list-2':['Ms.B@somewhere.com',],
315 # Simulated SMTP channel & server
316 class SimSMTPChannel(smtpd.SMTPChannel):
318 def __init__(self, extra_features, *args, **kw):
319 self._extrafeatures = ''.join(
320 [ "250-{0}\r\n".format(x) for x in extra_features ])
321 smtpd.SMTPChannel.__init__(self, *args, **kw)
323 def smtp_EHLO(self, arg):
324 resp = ('250-testhost\r\n'
326 '250-SIZE 20000000\r\n'
329 resp = resp + self._extrafeatures + '250 HELP'
332 def smtp_VRFY(self, arg):
333 # For max compatibility smtplib should be sending the raw address.
335 self.push('250 %s %s' % (sim_users[arg], smtplib.quoteaddr(arg)))
337 self.push('550 No such user: %s' % arg)
339 def smtp_EXPN(self, arg):
340 list_name = arg.lower()
341 if list_name in sim_lists:
342 user_list = sim_lists[list_name]
343 for n, user_email in enumerate(user_list):
344 quoted_addr = smtplib.quoteaddr(user_email)
345 if n < len(user_list) - 1:
346 self.push('250-%s %s' % (sim_users[user_email], quoted_addr))
348 self.push('250 %s %s' % (sim_users[user_email], quoted_addr))
350 self.push('550 No access for you!')
352 def smtp_AUTH(self, arg):
353 if arg.strip().lower()=='cram-md5':
354 self.push('334 {0}'.format(sim_cram_md5_challenge))
356 mech, auth = arg.split()
358 if mech not in sim_auth_credentials:
359 self.push('504 auth type unimplemented')
361 if mech == 'plain' and auth==sim_auth_credentials['plain']:
362 self.push('235 plain auth ok')
363 elif mech=='login' and auth==sim_auth_credentials['login']:
364 self.push('334 Password:')
366 self.push('550 No access for you!')
368 def handle_error(self):
372 class SimSMTPServer(smtpd.SMTPServer):
374 def __init__(self, *args, **kw):
375 self._extra_features = []
376 smtpd.SMTPServer.__init__(self, *args, **kw)
378 def handle_accept(self):
379 conn, addr = self.accept()
380 self._SMTPchannel = SimSMTPChannel(self._extra_features,
383 def process_message(self, peer, mailfrom, rcpttos, data):
386 def add_feature(self, feature):
387 self._extra_features.append(feature)
389 def handle_error(self):
393 # Test various SMTP & ESMTP commands/behaviors that require a simulated server
394 # (i.e., something with more features than DebuggingServer)
395 @unittest.skipUnless(threading, 'Threading required for this test.')
396 class SMTPSimTests(unittest.TestCase):
399 self._threads = test_support.threading_setup()
400 self.serv_evt = threading.Event()
401 self.client_evt = threading.Event()
402 # Pick a random unused port by passing 0 for the port number
403 self.serv = SimSMTPServer((HOST, 0), ('nowhere', -1))
404 # Keep a note of what port was assigned
405 self.port = self.serv.socket.getsockname()[1]
406 serv_args = (self.serv, self.serv_evt, self.client_evt)
407 self.thread = threading.Thread(target=debugging_server, args=serv_args)
410 # wait until server thread has assigned a port number
412 self.serv_evt.clear()
415 # indicate that the client is finished
416 self.client_evt.set()
417 # wait for the server thread to terminate
420 test_support.threading_cleanup(*self._threads)
424 smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
428 smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
430 # no features should be present before the EHLO
431 self.assertEqual(smtp.esmtp_features, {})
433 # features expected from the test server
434 expected_features = {'expn':'',
442 self.assertEqual(smtp.esmtp_features, expected_features)
443 for k in expected_features:
444 self.assertTrue(smtp.has_extn(k))
445 self.assertFalse(smtp.has_extn('unsupported-feature'))
449 smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
451 for email, name in sim_users.items():
452 expected_known = (250, '%s %s' % (name, smtplib.quoteaddr(email)))
453 self.assertEqual(smtp.vrfy(email), expected_known)
455 u = 'nobody@nowhere.com'
456 expected_unknown = (550, 'No such user: %s' % u)
457 self.assertEqual(smtp.vrfy(u), expected_unknown)
461 smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
463 for listname, members in sim_lists.items():
466 users.append('%s %s' % (sim_users[m], smtplib.quoteaddr(m)))
467 expected_known = (250, '\n'.join(users))
468 self.assertEqual(smtp.expn(listname), expected_known)
470 u = 'PSU-Members-List'
471 expected_unknown = (550, 'No access for you!')
472 self.assertEqual(smtp.expn(u), expected_unknown)
475 def testAUTH_PLAIN(self):
476 self.serv.add_feature("AUTH PLAIN")
477 smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
479 expected_auth_ok = (235, b'plain auth ok')
480 self.assertEqual(smtp.login(sim_auth[0], sim_auth[1]), expected_auth_ok)
482 # SimSMTPChannel doesn't fully support LOGIN or CRAM-MD5 auth because they
483 # require a synchronous read to obtain the credentials...so instead smtpd
484 # sees the credential sent by smtplib's login method as an unknown command,
485 # which results in smtplib raising an auth error. Fortunately the error
486 # message contains the encoded credential, so we can partially check that it
487 # was generated correctly (partially, because the 'word' is uppercased in
488 # the error message).
490 def testAUTH_LOGIN(self):
491 self.serv.add_feature("AUTH LOGIN")
492 smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
493 try: smtp.login(sim_auth[0], sim_auth[1])
494 except smtplib.SMTPAuthenticationError as err:
495 if sim_auth_login_password not in str(err):
496 raise "expected encoded password not found in error message"
498 def testAUTH_CRAM_MD5(self):
499 self.serv.add_feature("AUTH CRAM-MD5")
500 smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
502 try: smtp.login(sim_auth[0], sim_auth[1])
503 except smtplib.SMTPAuthenticationError as err:
504 if sim_auth_credentials['cram-md5'] not in str(err):
505 raise "expected encoded credentials not found in error message"
507 #TODO: add tests for correct AUTH method fallback now that the
508 #test infrastructure can support it.
511 def test_main(verbose=None):
512 test_support.run_unittest(GeneralTests, DebuggingServerTests,
514 BadHELOServerTests, SMTPSimTests)
516 if __name__ == '__main__':