cpython/Lib/test/test_smtplib.py

1228 lines
46 KiB
Python

import asyncore
import email.mime.text
from email.message import EmailMessage
from email.base64mime import body_encode as encode_base64
import email.utils
import socket
import smtpd
import smtplib
import io
import re
import sys
import time
import select
import errno
import textwrap
import unittest
from test import support, mock_socket
try:
import threading
except ImportError:
threading = None
HOST = support.HOST
if sys.platform == 'darwin':
# select.poll returns a select.POLLHUP at the end of the tests
# on darwin, so just ignore it
def handle_expt(self):
pass
smtpd.SMTPChannel.handle_expt = handle_expt
def server(evt, buf, serv):
serv.listen()
evt.set()
try:
conn, addr = serv.accept()
except socket.timeout:
pass
else:
n = 500
while buf and n > 0:
r, w, e = select.select([], [conn], [])
if w:
sent = conn.send(buf)
buf = buf[sent:]
n -= 1
conn.close()
finally:
serv.close()
evt.set()
class GeneralTests(unittest.TestCase):
def setUp(self):
smtplib.socket = mock_socket
self.port = 25
def tearDown(self):
smtplib.socket = socket
# This method is no longer used but is retained for backward compatibility,
# so test to make sure it still works.
def testQuoteData(self):
teststr = "abc\n.jkl\rfoo\r\n..blue"
expected = "abc\r\n..jkl\r\nfoo\r\n...blue"
self.assertEqual(expected, smtplib.quotedata(teststr))
def testBasic1(self):
mock_socket.reply_with(b"220 Hola mundo")
# connects
smtp = smtplib.SMTP(HOST, self.port)
smtp.close()
def testSourceAddress(self):
mock_socket.reply_with(b"220 Hola mundo")
# connects
smtp = smtplib.SMTP(HOST, self.port,
source_address=('127.0.0.1',19876))
self.assertEqual(smtp.source_address, ('127.0.0.1', 19876))
smtp.close()
def testBasic2(self):
mock_socket.reply_with(b"220 Hola mundo")
# connects, include port in host name
smtp = smtplib.SMTP("%s:%s" % (HOST, self.port))
smtp.close()
def testLocalHostName(self):
mock_socket.reply_with(b"220 Hola mundo")
# check that supplied local_hostname is used
smtp = smtplib.SMTP(HOST, self.port, local_hostname="testhost")
self.assertEqual(smtp.local_hostname, "testhost")
smtp.close()
def testTimeoutDefault(self):
mock_socket.reply_with(b"220 Hola mundo")
self.assertIsNone(mock_socket.getdefaulttimeout())
mock_socket.setdefaulttimeout(30)
self.assertEqual(mock_socket.getdefaulttimeout(), 30)
try:
smtp = smtplib.SMTP(HOST, self.port)
finally:
mock_socket.setdefaulttimeout(None)
self.assertEqual(smtp.sock.gettimeout(), 30)
smtp.close()
def testTimeoutNone(self):
mock_socket.reply_with(b"220 Hola mundo")
self.assertIsNone(socket.getdefaulttimeout())
socket.setdefaulttimeout(30)
try:
smtp = smtplib.SMTP(HOST, self.port, timeout=None)
finally:
socket.setdefaulttimeout(None)
self.assertIsNone(smtp.sock.gettimeout())
smtp.close()
def testTimeoutValue(self):
mock_socket.reply_with(b"220 Hola mundo")
smtp = smtplib.SMTP(HOST, self.port, timeout=30)
self.assertEqual(smtp.sock.gettimeout(), 30)
smtp.close()
def test_debuglevel(self):
mock_socket.reply_with(b"220 Hello world")
smtp = smtplib.SMTP()
smtp.set_debuglevel(1)
with support.captured_stderr() as stderr:
smtp.connect(HOST, self.port)
smtp.close()
expected = re.compile(r"^connect:", re.MULTILINE)
self.assertRegex(stderr.getvalue(), expected)
def test_debuglevel_2(self):
mock_socket.reply_with(b"220 Hello world")
smtp = smtplib.SMTP()
smtp.set_debuglevel(2)
with support.captured_stderr() as stderr:
smtp.connect(HOST, self.port)
smtp.close()
expected = re.compile(r"^\d{2}:\d{2}:\d{2}\.\d{6} connect: ",
re.MULTILINE)
self.assertRegex(stderr.getvalue(), expected)
# Test server thread using the specified SMTP server class
def debugging_server(serv, serv_evt, client_evt):
serv_evt.set()
try:
if hasattr(select, 'poll'):
poll_fun = asyncore.poll2
else:
poll_fun = asyncore.poll
n = 1000
while asyncore.socket_map and n > 0:
poll_fun(0.01, asyncore.socket_map)
# when the client conversation is finished, it will
# set client_evt, and it's then ok to kill the server
if client_evt.is_set():
serv.close()
break
n -= 1
except socket.timeout:
pass
finally:
if not client_evt.is_set():
# allow some time for the client to read the result
time.sleep(0.5)
serv.close()
asyncore.close_all()
serv_evt.set()
MSG_BEGIN = '---------- MESSAGE FOLLOWS ----------\n'
MSG_END = '------------ END MESSAGE ------------\n'
# NOTE: Some SMTP objects in the tests below are created with a non-default
# local_hostname argument to the constructor, since (on some systems) the FQDN
# lookup caused by the default local_hostname sometimes takes so long that the
# test server times out, causing the test to fail.
# Test behavior of smtpd.DebuggingServer
@unittest.skipUnless(threading, 'Threading required for this test.')
class DebuggingServerTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.real_getfqdn = socket.getfqdn
socket.getfqdn = mock_socket.getfqdn
# temporarily replace sys.stdout to capture DebuggingServer output
self.old_stdout = sys.stdout
self.output = io.StringIO()
sys.stdout = self.output
self.serv_evt = threading.Event()
self.client_evt = threading.Event()
# Capture SMTPChannel debug output
self.old_DEBUGSTREAM = smtpd.DEBUGSTREAM
smtpd.DEBUGSTREAM = io.StringIO()
# Pick a random unused port by passing 0 for the port number
self.serv = smtpd.DebuggingServer((HOST, 0), ('nowhere', -1),
decode_data=True)
# Keep a note of what port was assigned
self.port = self.serv.socket.getsockname()[1]
serv_args = (self.serv, self.serv_evt, self.client_evt)
self.thread = threading.Thread(target=debugging_server, args=serv_args)
self.thread.start()
# wait until server thread has assigned a port number
self.serv_evt.wait()
self.serv_evt.clear()
def tearDown(self):
socket.getfqdn = self.real_getfqdn
# indicate that the client is finished
self.client_evt.set()
# wait for the server thread to terminate
self.serv_evt.wait()
self.thread.join()
# restore sys.stdout
sys.stdout = self.old_stdout
# restore DEBUGSTREAM
smtpd.DEBUGSTREAM.close()
smtpd.DEBUGSTREAM = self.old_DEBUGSTREAM
def testBasic(self):
# connect
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
smtp.quit()
def testSourceAddress(self):
# connect
port = support.find_unused_port()
try:
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost',
timeout=3, source_address=('127.0.0.1', port))
self.assertEqual(smtp.source_address, ('127.0.0.1', port))
self.assertEqual(smtp.local_hostname, 'localhost')
smtp.quit()
except OSError as e:
if e.errno == errno.EADDRINUSE:
self.skipTest("couldn't bind to port %d" % port)
raise
def testNOOP(self):
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
expected = (250, b'OK')
self.assertEqual(smtp.noop(), expected)
smtp.quit()
def testRSET(self):
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
expected = (250, b'OK')
self.assertEqual(smtp.rset(), expected)
smtp.quit()
def testELHO(self):
# EHLO isn't implemented in DebuggingServer
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
expected = (250, b'\nSIZE 33554432\nHELP')
self.assertEqual(smtp.ehlo(), expected)
smtp.quit()
def testEXPNNotImplemented(self):
# EXPN isn't implemented in DebuggingServer
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
expected = (502, b'EXPN not implemented')
smtp.putcmd('EXPN')
self.assertEqual(smtp.getreply(), expected)
smtp.quit()
def testVRFY(self):
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
expected = (252, b'Cannot VRFY user, but will accept message ' + \
b'and attempt delivery')
self.assertEqual(smtp.vrfy('nobody@nowhere.com'), expected)
self.assertEqual(smtp.verify('nobody@nowhere.com'), expected)
smtp.quit()
def testSecondHELO(self):
# check that a second HELO returns a message that it's a duplicate
# (this behavior is specific to smtpd.SMTPChannel)
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
smtp.helo()
expected = (503, b'Duplicate HELO/EHLO')
self.assertEqual(smtp.helo(), expected)
smtp.quit()
def testHELP(self):
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
self.assertEqual(smtp.help(), b'Supported commands: EHLO HELO MAIL ' + \
b'RCPT DATA RSET NOOP QUIT VRFY')
smtp.quit()
def testSend(self):
# connect and send mail
m = 'A test message'
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
smtp.sendmail('John', 'Sally', m)
# XXX(nnorwitz): this test is flaky and dies with a bad file descriptor
# in asyncore. This sleep might help, but should really be fixed
# properly by using an Event variable.
time.sleep(0.01)
smtp.quit()
self.client_evt.set()
self.serv_evt.wait()
self.output.flush()
mexpect = '%s%s\n%s' % (MSG_BEGIN, m, MSG_END)
self.assertEqual(self.output.getvalue(), mexpect)
def testSendBinary(self):
m = b'A test message'
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
smtp.sendmail('John', 'Sally', m)
# XXX (see comment in testSend)
time.sleep(0.01)
smtp.quit()
self.client_evt.set()
self.serv_evt.wait()
self.output.flush()
mexpect = '%s%s\n%s' % (MSG_BEGIN, m.decode('ascii'), MSG_END)
self.assertEqual(self.output.getvalue(), mexpect)
def testSendNeedingDotQuote(self):
# Issue 12283
m = '.A test\n.mes.sage.'
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
smtp.sendmail('John', 'Sally', m)
# XXX (see comment in testSend)
time.sleep(0.01)
smtp.quit()
self.client_evt.set()
self.serv_evt.wait()
self.output.flush()
mexpect = '%s%s\n%s' % (MSG_BEGIN, m, MSG_END)
self.assertEqual(self.output.getvalue(), mexpect)
def testSendNullSender(self):
m = 'A test message'
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
smtp.sendmail('<>', 'Sally', m)
# XXX (see comment in testSend)
time.sleep(0.01)
smtp.quit()
self.client_evt.set()
self.serv_evt.wait()
self.output.flush()
mexpect = '%s%s\n%s' % (MSG_BEGIN, m, MSG_END)
self.assertEqual(self.output.getvalue(), mexpect)
debugout = smtpd.DEBUGSTREAM.getvalue()
sender = re.compile("^sender: <>$", re.MULTILINE)
self.assertRegex(debugout, sender)
def testSendMessage(self):
m = email.mime.text.MIMEText('A test message')
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
smtp.send_message(m, from_addr='John', to_addrs='Sally')
# XXX (see comment in testSend)
time.sleep(0.01)
smtp.quit()
self.client_evt.set()
self.serv_evt.wait()
self.output.flush()
# Add the X-Peer header that DebuggingServer adds
m['X-Peer'] = socket.gethostbyname('localhost')
mexpect = '%s%s\n%s' % (MSG_BEGIN, m.as_string(), MSG_END)
self.assertEqual(self.output.getvalue(), mexpect)
def testSendMessageWithAddresses(self):
m = email.mime.text.MIMEText('A test message')
m['From'] = 'foo@bar.com'
m['To'] = 'John'
m['CC'] = 'Sally, Fred'
m['Bcc'] = 'John Root <root@localhost>, "Dinsdale" <warped@silly.walks.com>'
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
smtp.send_message(m)
# XXX (see comment in testSend)
time.sleep(0.01)
smtp.quit()
# make sure the Bcc header is still in the message.
self.assertEqual(m['Bcc'], 'John Root <root@localhost>, "Dinsdale" '
'<warped@silly.walks.com>')
self.client_evt.set()
self.serv_evt.wait()
self.output.flush()
# Add the X-Peer header that DebuggingServer adds
m['X-Peer'] = socket.gethostbyname('localhost')
# The Bcc header should not be transmitted.
del m['Bcc']
mexpect = '%s%s\n%s' % (MSG_BEGIN, m.as_string(), MSG_END)
self.assertEqual(self.output.getvalue(), mexpect)
debugout = smtpd.DEBUGSTREAM.getvalue()
sender = re.compile("^sender: foo@bar.com$", re.MULTILINE)
self.assertRegex(debugout, sender)
for addr in ('John', 'Sally', 'Fred', 'root@localhost',
'warped@silly.walks.com'):
to_addr = re.compile(r"^recips: .*'{}'.*$".format(addr),
re.MULTILINE)
self.assertRegex(debugout, to_addr)
def testSendMessageWithSomeAddresses(self):
# Make sure nothing breaks if not all of the three 'to' headers exist
m = email.mime.text.MIMEText('A test message')
m['From'] = 'foo@bar.com'
m['To'] = 'John, Dinsdale'
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
smtp.send_message(m)
# XXX (see comment in testSend)
time.sleep(0.01)
smtp.quit()
self.client_evt.set()
self.serv_evt.wait()
self.output.flush()
# Add the X-Peer header that DebuggingServer adds
m['X-Peer'] = socket.gethostbyname('localhost')
mexpect = '%s%s\n%s' % (MSG_BEGIN, m.as_string(), MSG_END)
self.assertEqual(self.output.getvalue(), mexpect)
debugout = smtpd.DEBUGSTREAM.getvalue()
sender = re.compile("^sender: foo@bar.com$", re.MULTILINE)
self.assertRegex(debugout, sender)
for addr in ('John', 'Dinsdale'):
to_addr = re.compile(r"^recips: .*'{}'.*$".format(addr),
re.MULTILINE)
self.assertRegex(debugout, to_addr)
def testSendMessageWithSpecifiedAddresses(self):
# Make sure addresses specified in call override those in message.
m = email.mime.text.MIMEText('A test message')
m['From'] = 'foo@bar.com'
m['To'] = 'John, Dinsdale'
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
smtp.send_message(m, from_addr='joe@example.com', to_addrs='foo@example.net')
# XXX (see comment in testSend)
time.sleep(0.01)
smtp.quit()
self.client_evt.set()
self.serv_evt.wait()
self.output.flush()
# Add the X-Peer header that DebuggingServer adds
m['X-Peer'] = socket.gethostbyname('localhost')
mexpect = '%s%s\n%s' % (MSG_BEGIN, m.as_string(), MSG_END)
self.assertEqual(self.output.getvalue(), mexpect)
debugout = smtpd.DEBUGSTREAM.getvalue()
sender = re.compile("^sender: joe@example.com$", re.MULTILINE)
self.assertRegex(debugout, sender)
for addr in ('John', 'Dinsdale'):
to_addr = re.compile(r"^recips: .*'{}'.*$".format(addr),
re.MULTILINE)
self.assertNotRegex(debugout, to_addr)
recip = re.compile(r"^recips: .*'foo@example.net'.*$", re.MULTILINE)
self.assertRegex(debugout, recip)
def testSendMessageWithMultipleFrom(self):
# Sender overrides To
m = email.mime.text.MIMEText('A test message')
m['From'] = 'Bernard, Bianca'
m['Sender'] = 'the_rescuers@Rescue-Aid-Society.com'
m['To'] = 'John, Dinsdale'
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
smtp.send_message(m)
# XXX (see comment in testSend)
time.sleep(0.01)
smtp.quit()
self.client_evt.set()
self.serv_evt.wait()
self.output.flush()
# Add the X-Peer header that DebuggingServer adds
m['X-Peer'] = socket.gethostbyname('localhost')
mexpect = '%s%s\n%s' % (MSG_BEGIN, m.as_string(), MSG_END)
self.assertEqual(self.output.getvalue(), mexpect)
debugout = smtpd.DEBUGSTREAM.getvalue()
sender = re.compile("^sender: the_rescuers@Rescue-Aid-Society.com$", re.MULTILINE)
self.assertRegex(debugout, sender)
for addr in ('John', 'Dinsdale'):
to_addr = re.compile(r"^recips: .*'{}'.*$".format(addr),
re.MULTILINE)
self.assertRegex(debugout, to_addr)
def testSendMessageResent(self):
m = email.mime.text.MIMEText('A test message')
m['From'] = 'foo@bar.com'
m['To'] = 'John'
m['CC'] = 'Sally, Fred'
m['Bcc'] = 'John Root <root@localhost>, "Dinsdale" <warped@silly.walks.com>'
m['Resent-Date'] = 'Thu, 1 Jan 1970 17:42:00 +0000'
m['Resent-From'] = 'holy@grail.net'
m['Resent-To'] = 'Martha <my_mom@great.cooker.com>, Jeff'
m['Resent-Bcc'] = 'doe@losthope.net'
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
smtp.send_message(m)
# XXX (see comment in testSend)
time.sleep(0.01)
smtp.quit()
self.client_evt.set()
self.serv_evt.wait()
self.output.flush()
# The Resent-Bcc headers are deleted before serialization.
del m['Bcc']
del m['Resent-Bcc']
# Add the X-Peer header that DebuggingServer adds
m['X-Peer'] = socket.gethostbyname('localhost')
mexpect = '%s%s\n%s' % (MSG_BEGIN, m.as_string(), MSG_END)
self.assertEqual(self.output.getvalue(), mexpect)
debugout = smtpd.DEBUGSTREAM.getvalue()
sender = re.compile("^sender: holy@grail.net$", re.MULTILINE)
self.assertRegex(debugout, sender)
for addr in ('my_mom@great.cooker.com', 'Jeff', 'doe@losthope.net'):
to_addr = re.compile(r"^recips: .*'{}'.*$".format(addr),
re.MULTILINE)
self.assertRegex(debugout, to_addr)
def testSendMessageMultipleResentRaises(self):
m = email.mime.text.MIMEText('A test message')
m['From'] = 'foo@bar.com'
m['To'] = 'John'
m['CC'] = 'Sally, Fred'
m['Bcc'] = 'John Root <root@localhost>, "Dinsdale" <warped@silly.walks.com>'
m['Resent-Date'] = 'Thu, 1 Jan 1970 17:42:00 +0000'
m['Resent-From'] = 'holy@grail.net'
m['Resent-To'] = 'Martha <my_mom@great.cooker.com>, Jeff'
m['Resent-Bcc'] = 'doe@losthope.net'
m['Resent-Date'] = 'Thu, 2 Jan 1970 17:42:00 +0000'
m['Resent-To'] = 'holy@grail.net'
m['Resent-From'] = 'Martha <my_mom@great.cooker.com>, Jeff'
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
with self.assertRaises(ValueError):
smtp.send_message(m)
smtp.close()
class NonConnectingTests(unittest.TestCase):
def testNotConnected(self):
# Test various operations on an unconnected SMTP object that
# should raise exceptions (at present the attempt in SMTP.send
# to reference the nonexistent 'sock' attribute of the SMTP object
# causes an AttributeError)
smtp = smtplib.SMTP()
self.assertRaises(smtplib.SMTPServerDisconnected, smtp.ehlo)
self.assertRaises(smtplib.SMTPServerDisconnected,
smtp.send, 'test msg')
def testNonnumericPort(self):
# check that non-numeric port raises OSError
self.assertRaises(OSError, smtplib.SMTP,
"localhost", "bogus")
self.assertRaises(OSError, smtplib.SMTP,
"localhost:bogus")
# test response of client to a non-successful HELO message
@unittest.skipUnless(threading, 'Threading required for this test.')
class BadHELOServerTests(unittest.TestCase):
def setUp(self):
smtplib.socket = mock_socket
mock_socket.reply_with(b"199 no hello for you!")
self.old_stdout = sys.stdout
self.output = io.StringIO()
sys.stdout = self.output
self.port = 25
def tearDown(self):
smtplib.socket = socket
sys.stdout = self.old_stdout
def testFailingHELO(self):
self.assertRaises(smtplib.SMTPConnectError, smtplib.SMTP,
HOST, self.port, 'localhost', 3)
@unittest.skipUnless(threading, 'Threading required for this test.')
class TooLongLineTests(unittest.TestCase):
respdata = b'250 OK' + (b'.' * smtplib._MAXLINE * 2) + b'\n'
def setUp(self):
self.old_stdout = sys.stdout
self.output = io.StringIO()
sys.stdout = self.output
self.evt = threading.Event()
self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.sock.settimeout(15)
self.port = support.bind_port(self.sock)
servargs = (self.evt, self.respdata, self.sock)
threading.Thread(target=server, args=servargs).start()
self.evt.wait()
self.evt.clear()
def tearDown(self):
self.evt.wait()
sys.stdout = self.old_stdout
def testLineTooLong(self):
self.assertRaises(smtplib.SMTPResponseException, smtplib.SMTP,
HOST, self.port, 'localhost', 3)
sim_users = {'Mr.A@somewhere.com':'John A',
'Ms.B@xn--fo-fka.com':'Sally B',
'Mrs.C@somewhereesle.com':'Ruth C',
}
sim_auth = ('Mr.A@somewhere.com', 'somepassword')
sim_cram_md5_challenge = ('PENCeUxFREJoU0NnbmhNWitOMjNGNn'
'dAZWx3b29kLmlubm9zb2Z0LmNvbT4=')
sim_auth_credentials = {
'login': 'TXIuQUBzb21ld2hlcmUuY29t',
'plain': 'AE1yLkFAc29tZXdoZXJlLmNvbQBzb21lcGFzc3dvcmQ=',
'cram-md5': ('TXIUQUBZB21LD2HLCMUUY29TIDG4OWQ0MJ'
'KWZGQ4ODNMNDA4NTGXMDRLZWMYZJDMODG1'),
}
sim_auth_login_user = 'TXIUQUBZB21LD2HLCMUUY29T'
sim_auth_plain = 'AE1YLKFAC29TZXDOZXJLLMNVBQBZB21LCGFZC3DVCMQ='
sim_lists = {'list-1':['Mr.A@somewhere.com','Mrs.C@somewhereesle.com'],
'list-2':['Ms.B@xn--fo-fka.com',],
}
# Simulated SMTP channel & server
class SimSMTPChannel(smtpd.SMTPChannel):
quit_response = None
mail_response = None
rcpt_response = None
data_response = None
rcpt_count = 0
rset_count = 0
disconnect = 0
def __init__(self, extra_features, *args, **kw):
self._extrafeatures = ''.join(
[ "250-{0}\r\n".format(x) for x in extra_features ])
super(SimSMTPChannel, self).__init__(*args, **kw)
def smtp_EHLO(self, arg):
resp = ('250-testhost\r\n'
'250-EXPN\r\n'
'250-SIZE 20000000\r\n'
'250-STARTTLS\r\n'
'250-DELIVERBY\r\n')
resp = resp + self._extrafeatures + '250 HELP'
self.push(resp)
self.seen_greeting = arg
self.extended_smtp = True
def smtp_VRFY(self, arg):
# For max compatibility smtplib should be sending the raw address.
if arg in sim_users:
self.push('250 %s %s' % (sim_users[arg], smtplib.quoteaddr(arg)))
else:
self.push('550 No such user: %s' % arg)
def smtp_EXPN(self, arg):
list_name = arg.lower()
if list_name in sim_lists:
user_list = sim_lists[list_name]
for n, user_email in enumerate(user_list):
quoted_addr = smtplib.quoteaddr(user_email)
if n < len(user_list) - 1:
self.push('250-%s %s' % (sim_users[user_email], quoted_addr))
else:
self.push('250 %s %s' % (sim_users[user_email], quoted_addr))
else:
self.push('550 No access for you!')
def smtp_AUTH(self, arg):
mech = arg.strip().lower()
if mech=='cram-md5':
self.push('334 {}'.format(sim_cram_md5_challenge))
elif mech not in sim_auth_credentials:
self.push('504 auth type unimplemented')
return
elif mech=='plain':
self.push('334 ')
elif mech=='login':
self.push('334 ')
else:
self.push('550 No access for you!')
def smtp_QUIT(self, arg):
if self.quit_response is None:
super(SimSMTPChannel, self).smtp_QUIT(arg)
else:
self.push(self.quit_response)
self.close_when_done()
def smtp_MAIL(self, arg):
if self.mail_response is None:
super().smtp_MAIL(arg)
else:
self.push(self.mail_response)
if self.disconnect:
self.close_when_done()
def smtp_RCPT(self, arg):
if self.rcpt_response is None:
super().smtp_RCPT(arg)
return
self.rcpt_count += 1
self.push(self.rcpt_response[self.rcpt_count-1])
def smtp_RSET(self, arg):
self.rset_count += 1
super().smtp_RSET(arg)
def smtp_DATA(self, arg):
if self.data_response is None:
super().smtp_DATA(arg)
else:
self.push(self.data_response)
def handle_error(self):
raise
class SimSMTPServer(smtpd.SMTPServer):
channel_class = SimSMTPChannel
def __init__(self, *args, **kw):
self._extra_features = []
smtpd.SMTPServer.__init__(self, *args, **kw)
def handle_accepted(self, conn, addr):
self._SMTPchannel = self.channel_class(
self._extra_features, self, conn, addr,
decode_data=self._decode_data)
def process_message(self, peer, mailfrom, rcpttos, data):
pass
def add_feature(self, feature):
self._extra_features.append(feature)
def handle_error(self):
raise
# Test various SMTP & ESMTP commands/behaviors that require a simulated server
# (i.e., something with more features than DebuggingServer)
@unittest.skipUnless(threading, 'Threading required for this test.')
class SMTPSimTests(unittest.TestCase):
def setUp(self):
self.real_getfqdn = socket.getfqdn
socket.getfqdn = mock_socket.getfqdn
self.serv_evt = threading.Event()
self.client_evt = threading.Event()
# Pick a random unused port by passing 0 for the port number
self.serv = SimSMTPServer((HOST, 0), ('nowhere', -1), decode_data=True)
# Keep a note of what port was assigned
self.port = self.serv.socket.getsockname()[1]
serv_args = (self.serv, self.serv_evt, self.client_evt)
self.thread = threading.Thread(target=debugging_server, args=serv_args)
self.thread.start()
# wait until server thread has assigned a port number
self.serv_evt.wait()
self.serv_evt.clear()
def tearDown(self):
socket.getfqdn = self.real_getfqdn
# indicate that the client is finished
self.client_evt.set()
# wait for the server thread to terminate
self.serv_evt.wait()
self.thread.join()
def testBasic(self):
# smoke test
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
smtp.quit()
def testEHLO(self):
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
# no features should be present before the EHLO
self.assertEqual(smtp.esmtp_features, {})
# features expected from the test server
expected_features = {'expn':'',
'size': '20000000',
'starttls': '',
'deliverby': '',
'help': '',
}
smtp.ehlo()
self.assertEqual(smtp.esmtp_features, expected_features)
for k in expected_features:
self.assertTrue(smtp.has_extn(k))
self.assertFalse(smtp.has_extn('unsupported-feature'))
smtp.quit()
def testVRFY(self):
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
for addr_spec, name in sim_users.items():
expected_known = (250, bytes('%s %s' %
(name, smtplib.quoteaddr(addr_spec)),
"ascii"))
self.assertEqual(smtp.vrfy(addr_spec), expected_known)
u = 'nobody@nowhere.com'
expected_unknown = (550, ('No such user: %s' % u).encode('ascii'))
self.assertEqual(smtp.vrfy(u), expected_unknown)
smtp.quit()
def testEXPN(self):
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
for listname, members in sim_lists.items():
users = []
for m in members:
users.append('%s %s' % (sim_users[m], smtplib.quoteaddr(m)))
expected_known = (250, bytes('\n'.join(users), "ascii"))
self.assertEqual(smtp.expn(listname), expected_known)
u = 'PSU-Members-List'
expected_unknown = (550, b'No access for you!')
self.assertEqual(smtp.expn(u), expected_unknown)
smtp.quit()
# SimSMTPChannel doesn't fully support AUTH because it requires a
# synchronous read to obtain the credentials...so instead smtpd
# sees the credential sent by smtplib's login method as an unknown command,
# which results in smtplib raising an auth error. Fortunately the error
# message contains the encoded credential, so we can partially check that it
# was generated correctly (partially, because the 'word' is uppercased in
# the error message).
def testAUTH_PLAIN(self):
self.serv.add_feature("AUTH PLAIN")
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
try: smtp.login(sim_auth[0], sim_auth[1], initial_response_ok=False)
except smtplib.SMTPAuthenticationError as err:
self.assertIn(sim_auth_plain, str(err))
smtp.close()
def testAUTH_LOGIN(self):
self.serv.add_feature("AUTH LOGIN")
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
try: smtp.login(sim_auth[0], sim_auth[1])
except smtplib.SMTPAuthenticationError as err:
self.assertIn(sim_auth_login_user, str(err))
smtp.close()
def testAUTH_CRAM_MD5(self):
self.serv.add_feature("AUTH CRAM-MD5")
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
try: smtp.login(sim_auth[0], sim_auth[1])
except smtplib.SMTPAuthenticationError as err:
self.assertIn(sim_auth_credentials['cram-md5'], str(err))
smtp.close()
def testAUTH_multiple(self):
# Test that multiple authentication methods are tried.
self.serv.add_feature("AUTH BOGUS PLAIN LOGIN CRAM-MD5")
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
try: smtp.login(sim_auth[0], sim_auth[1])
except smtplib.SMTPAuthenticationError as err:
self.assertIn(sim_auth_login_user, str(err))
smtp.close()
def test_auth_function(self):
smtp = smtplib.SMTP(HOST, self.port,
local_hostname='localhost', timeout=15)
self.serv.add_feature("AUTH CRAM-MD5")
smtp.user, smtp.password = sim_auth[0], sim_auth[1]
supported = {'CRAM-MD5': smtp.auth_cram_md5,
'PLAIN': smtp.auth_plain,
'LOGIN': smtp.auth_login,
}
for mechanism, method in supported.items():
try: smtp.auth(mechanism, method, initial_response_ok=False)
except smtplib.SMTPAuthenticationError as err:
self.assertIn(sim_auth_credentials[mechanism.lower()].upper(),
str(err))
smtp.close()
def test_quit_resets_greeting(self):
smtp = smtplib.SMTP(HOST, self.port,
local_hostname='localhost',
timeout=15)
code, message = smtp.ehlo()
self.assertEqual(code, 250)
self.assertIn('size', smtp.esmtp_features)
smtp.quit()
self.assertNotIn('size', smtp.esmtp_features)
smtp.connect(HOST, self.port)
self.assertNotIn('size', smtp.esmtp_features)
smtp.ehlo_or_helo_if_needed()
self.assertIn('size', smtp.esmtp_features)
smtp.quit()
def test_with_statement(self):
with smtplib.SMTP(HOST, self.port) as smtp:
code, message = smtp.noop()
self.assertEqual(code, 250)
self.assertRaises(smtplib.SMTPServerDisconnected, smtp.send, b'foo')
with smtplib.SMTP(HOST, self.port) as smtp:
smtp.close()
self.assertRaises(smtplib.SMTPServerDisconnected, smtp.send, b'foo')
def test_with_statement_QUIT_failure(self):
with self.assertRaises(smtplib.SMTPResponseException) as error:
with smtplib.SMTP(HOST, self.port) as smtp:
smtp.noop()
self.serv._SMTPchannel.quit_response = '421 QUIT FAILED'
self.assertEqual(error.exception.smtp_code, 421)
self.assertEqual(error.exception.smtp_error, b'QUIT FAILED')
#TODO: add tests for correct AUTH method fallback now that the
#test infrastructure can support it.
# Issue 17498: make sure _rset does not raise SMTPServerDisconnected exception
def test__rest_from_mail_cmd(self):
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
smtp.noop()
self.serv._SMTPchannel.mail_response = '451 Requested action aborted'
self.serv._SMTPchannel.disconnect = True
with self.assertRaises(smtplib.SMTPSenderRefused):
smtp.sendmail('John', 'Sally', 'test message')
self.assertIsNone(smtp.sock)
# Issue 5713: make sure close, not rset, is called if we get a 421 error
def test_421_from_mail_cmd(self):
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
smtp.noop()
self.serv._SMTPchannel.mail_response = '421 closing connection'
with self.assertRaises(smtplib.SMTPSenderRefused):
smtp.sendmail('John', 'Sally', 'test message')
self.assertIsNone(smtp.sock)
self.assertEqual(self.serv._SMTPchannel.rset_count, 0)
def test_421_from_rcpt_cmd(self):
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
smtp.noop()
self.serv._SMTPchannel.rcpt_response = ['250 accepted', '421 closing']
with self.assertRaises(smtplib.SMTPRecipientsRefused) as r:
smtp.sendmail('John', ['Sally', 'Frank', 'George'], 'test message')
self.assertIsNone(smtp.sock)
self.assertEqual(self.serv._SMTPchannel.rset_count, 0)
self.assertDictEqual(r.exception.args[0], {'Frank': (421, b'closing')})
def test_421_from_data_cmd(self):
class MySimSMTPChannel(SimSMTPChannel):
def found_terminator(self):
if self.smtp_state == self.DATA:
self.push('421 closing')
else:
super().found_terminator()
self.serv.channel_class = MySimSMTPChannel
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
smtp.noop()
with self.assertRaises(smtplib.SMTPDataError):
smtp.sendmail('John@foo.org', ['Sally@foo.org'], 'test message')
self.assertIsNone(smtp.sock)
self.assertEqual(self.serv._SMTPchannel.rcpt_count, 0)
def test_smtputf8_NotSupportedError_if_no_server_support(self):
smtp = smtplib.SMTP(
HOST, self.port, local_hostname='localhost', timeout=3)
self.addCleanup(smtp.close)
smtp.ehlo()
self.assertTrue(smtp.does_esmtp)
self.assertFalse(smtp.has_extn('smtputf8'))
self.assertRaises(
smtplib.SMTPNotSupportedError,
smtp.sendmail,
'John', 'Sally', '', mail_options=['BODY=8BITMIME', 'SMTPUTF8'])
self.assertRaises(
smtplib.SMTPNotSupportedError,
smtp.mail, 'John', options=['BODY=8BITMIME', 'SMTPUTF8'])
def test_send_unicode_without_SMTPUTF8(self):
smtp = smtplib.SMTP(
HOST, self.port, local_hostname='localhost', timeout=3)
self.addCleanup(smtp.close)
self.assertRaises(UnicodeEncodeError, smtp.sendmail, 'Alice', 'Böb', '')
self.assertRaises(UnicodeEncodeError, smtp.mail, 'Älice')
class SimSMTPUTF8Server(SimSMTPServer):
def __init__(self, *args, **kw):
# The base SMTP server turns these on automatically, but our test
# server is set up to munge the EHLO response, so we need to provide
# them as well. And yes, the call is to SMTPServer not SimSMTPServer.
self._extra_features = ['SMTPUTF8', '8BITMIME']
smtpd.SMTPServer.__init__(self, *args, **kw)
def handle_accepted(self, conn, addr):
self._SMTPchannel = self.channel_class(
self._extra_features, self, conn, addr,
decode_data=self._decode_data,
enable_SMTPUTF8=self.enable_SMTPUTF8,
)
def process_message(self, peer, mailfrom, rcpttos, data, mail_options=None,
rcpt_options=None):
self.last_peer = peer
self.last_mailfrom = mailfrom
self.last_rcpttos = rcpttos
self.last_message = data
self.last_mail_options = mail_options
self.last_rcpt_options = rcpt_options
@unittest.skipUnless(threading, 'Threading required for this test.')
class SMTPUTF8SimTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.real_getfqdn = socket.getfqdn
socket.getfqdn = mock_socket.getfqdn
self.serv_evt = threading.Event()
self.client_evt = threading.Event()
# Pick a random unused port by passing 0 for the port number
self.serv = SimSMTPUTF8Server((HOST, 0), ('nowhere', -1),
decode_data=False,
enable_SMTPUTF8=True)
# Keep a note of what port was assigned
self.port = self.serv.socket.getsockname()[1]
serv_args = (self.serv, self.serv_evt, self.client_evt)
self.thread = threading.Thread(target=debugging_server, args=serv_args)
self.thread.start()
# wait until server thread has assigned a port number
self.serv_evt.wait()
self.serv_evt.clear()
def tearDown(self):
socket.getfqdn = self.real_getfqdn
# indicate that the client is finished
self.client_evt.set()
# wait for the server thread to terminate
self.serv_evt.wait()
self.thread.join()
def test_test_server_supports_extensions(self):
smtp = smtplib.SMTP(
HOST, self.port, local_hostname='localhost', timeout=3)
self.addCleanup(smtp.close)
smtp.ehlo()
self.assertTrue(smtp.does_esmtp)
self.assertTrue(smtp.has_extn('smtputf8'))
def test_send_unicode_with_SMTPUTF8_via_sendmail(self):
m = '¡a test message containing unicode!'.encode('utf-8')
smtp = smtplib.SMTP(
HOST, self.port, local_hostname='localhost', timeout=3)
self.addCleanup(smtp.close)
smtp.sendmail('Jőhn', 'Sálly', m,
mail_options=['BODY=8BITMIME', 'SMTPUTF8'])
self.assertEqual(self.serv.last_mailfrom, 'Jőhn')
self.assertEqual(self.serv.last_rcpttos, ['Sálly'])
self.assertEqual(self.serv.last_message, m)
self.assertIn('BODY=8BITMIME', self.serv.last_mail_options)
self.assertIn('SMTPUTF8', self.serv.last_mail_options)
self.assertEqual(self.serv.last_rcpt_options, [])
def test_send_unicode_with_SMTPUTF8_via_low_level_API(self):
m = '¡a test message containing unicode!'.encode('utf-8')
smtp = smtplib.SMTP(
HOST, self.port, local_hostname='localhost', timeout=3)
self.addCleanup(smtp.close)
smtp.ehlo()
self.assertEqual(
smtp.mail('', options=['BODY=8BITMIME', 'SMTPUTF8']),
(250, b'OK'))
self.assertEqual(smtp.rcpt('János'), (250, b'OK'))
self.assertEqual(smtp.data(m), (250, b'OK'))
self.assertEqual(self.serv.last_mailfrom, '')
self.assertEqual(self.serv.last_rcpttos, ['János'])
self.assertEqual(self.serv.last_message, m)
self.assertIn('BODY=8BITMIME', self.serv.last_mail_options)
self.assertIn('SMTPUTF8', self.serv.last_mail_options)
self.assertEqual(self.serv.last_rcpt_options, [])
def test_send_message_uses_smtputf8_if_addrs_non_ascii(self):
msg = EmailMessage()
msg['From'] = "Páolo <főo@bar.com>"
msg['To'] = 'Dinsdale'
msg['Subject'] = 'Nudge nudge, wink, wink \u1F609'
# XXX I don't know why I need two \n's here, but this is an existing
# bug (if it is one) and not a problem with the new functionality.
msg.set_content("oh là là, know what I mean, know what I mean?\n\n")
# XXX smtpd converts received /r/n to /n, so we can't easily test that
# we are successfully sending /r/n :(.
expected = textwrap.dedent("""\
From: Páolo <főo@bar.com>
To: Dinsdale
Subject: Nudge nudge, wink, wink \u1F609
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 8bit
MIME-Version: 1.0
oh là là, know what I mean, know what I mean?
""")
smtp = smtplib.SMTP(
HOST, self.port, local_hostname='localhost', timeout=3)
self.addCleanup(smtp.close)
self.assertEqual(smtp.send_message(msg), {})
self.assertEqual(self.serv.last_mailfrom, 'főo@bar.com')
self.assertEqual(self.serv.last_rcpttos, ['Dinsdale'])
self.assertEqual(self.serv.last_message.decode(), expected)
self.assertIn('BODY=8BITMIME', self.serv.last_mail_options)
self.assertIn('SMTPUTF8', self.serv.last_mail_options)
self.assertEqual(self.serv.last_rcpt_options, [])
def test_send_message_error_on_non_ascii_addrs_if_no_smtputf8(self):
msg = EmailMessage()
msg['From'] = "Páolo <főo@bar.com>"
msg['To'] = 'Dinsdale'
msg['Subject'] = 'Nudge nudge, wink, wink \u1F609'
smtp = smtplib.SMTP(
HOST, self.port, local_hostname='localhost', timeout=3)
self.addCleanup(smtp.close)
self.assertRaises(smtplib.SMTPNotSupportedError,
smtp.send_message(msg))
EXPECTED_RESPONSE = encode_base64(b'\0psu\0doesnotexist', eol='')
class SimSMTPAUTHInitialResponseChannel(SimSMTPChannel):
def smtp_AUTH(self, arg):
# RFC 4954's AUTH command allows for an optional initial-response.
# Not all AUTH methods support this; some require a challenge. AUTH
# PLAIN does those, so test that here. See issue #15014.
args = arg.split()
if args[0].lower() == 'plain':
if len(args) == 2:
# AUTH PLAIN <initial-response> with the response base 64
# encoded. Hard code the expected response for the test.
if args[1] == EXPECTED_RESPONSE:
self.push('235 Ok')
return
self.push('571 Bad authentication')
class SimSMTPAUTHInitialResponseServer(SimSMTPServer):
channel_class = SimSMTPAUTHInitialResponseChannel
@unittest.skipUnless(threading, 'Threading required for this test.')
class SMTPAUTHInitialResponseSimTests(unittest.TestCase):
def setUp(self):
self.real_getfqdn = socket.getfqdn
socket.getfqdn = mock_socket.getfqdn
self.serv_evt = threading.Event()
self.client_evt = threading.Event()
# Pick a random unused port by passing 0 for the port number
self.serv = SimSMTPAUTHInitialResponseServer(
(HOST, 0), ('nowhere', -1), decode_data=True)
# Keep a note of what port was assigned
self.port = self.serv.socket.getsockname()[1]
serv_args = (self.serv, self.serv_evt, self.client_evt)
self.thread = threading.Thread(target=debugging_server, args=serv_args)
self.thread.start()
# wait until server thread has assigned a port number
self.serv_evt.wait()
self.serv_evt.clear()
def tearDown(self):
socket.getfqdn = self.real_getfqdn
# indicate that the client is finished
self.client_evt.set()
# wait for the server thread to terminate
self.serv_evt.wait()
self.thread.join()
def testAUTH_PLAIN_initial_response_login(self):
self.serv.add_feature('AUTH PLAIN')
smtp = smtplib.SMTP(HOST, self.port,
local_hostname='localhost', timeout=15)
smtp.login('psu', 'doesnotexist')
smtp.close()
def testAUTH_PLAIN_initial_response_auth(self):
self.serv.add_feature('AUTH PLAIN')
smtp = smtplib.SMTP(HOST, self.port,
local_hostname='localhost', timeout=15)
smtp.user = 'psu'
smtp.password = 'doesnotexist'
code, response = smtp.auth('plain', smtp.auth_plain)
smtp.close()
self.assertEqual(code, 235)
@support.reap_threads
def test_main(verbose=None):
support.run_unittest(
BadHELOServerTests,
DebuggingServerTests,
GeneralTests,
NonConnectingTests,
SMTPAUTHInitialResponseSimTests,
SMTPSimTests,
TooLongLineTests,
)
if __name__ == '__main__':
test_main()