from test import support
# If we end up with a significant number of tests that don't require
# threading, this test module should be split. Right now we skip
# them all if we don't have threading.
threading = support.import_module('threading')
from contextlib import contextmanager
import imaplib
import os.path
import socketserver
import time
import calendar
from test.support import reap_threads, verbose, transient_internet, run_with_tz, run_with_locale
import unittest
from datetime import datetime, timezone, timedelta
try:
import ssl
except ImportError:
ssl = None
CERTFILE = None
CAFILE = None
class TestImaplib(unittest.TestCase):
def test_Internaldate2tuple(self):
t0 = calendar.timegm((2000, 1, 1, 0, 0, 0, -1, -1, -1))
tt = imaplib.Internaldate2tuple(
b'25 (INTERNALDATE "01-Jan-2000 00:00:00 +0000")')
self.assertEqual(time.mktime(tt), t0)
tt = imaplib.Internaldate2tuple(
b'25 (INTERNALDATE "01-Jan-2000 11:30:00 +1130")')
self.assertEqual(time.mktime(tt), t0)
tt = imaplib.Internaldate2tuple(
b'25 (INTERNALDATE "31-Dec-1999 12:30:00 -1130")')
self.assertEqual(time.mktime(tt), t0)
@run_with_tz('MST+07MDT,M4.1.0,M10.5.0')
def test_Internaldate2tuple_issue10941(self):
self.assertNotEqual(imaplib.Internaldate2tuple(
b'25 (INTERNALDATE "02-Apr-2000 02:30:00 +0000")'),
imaplib.Internaldate2tuple(
b'25 (INTERNALDATE "02-Apr-2000 03:30:00 +0000")'))
def timevalues(self):
return [2000000000, 2000000000.0, time.localtime(2000000000),
(2033, 5, 18, 5, 33, 20, -1, -1, -1),
(2033, 5, 18, 5, 33, 20, -1, -1, 1),
datetime.fromtimestamp(2000000000,
timezone(timedelta(0, 2*60*60))),
'"18-May-2033 05:33:20 +0200"']
@run_with_locale('LC_ALL', 'de_DE', 'fr_FR')
# DST rules included to work around quirk where the Gnu C library may not
# otherwise restore the previous time zone
@run_with_tz('STD-1DST,M3.2.0,M11.1.0')
def test_Time2Internaldate(self):
expected = '"18-May-2033 05:33:20 +0200"'
for t in self.timevalues():
internal = imaplib.Time2Internaldate(t)
self.assertEqual(internal, expected)
def test_that_Time2Internaldate_returns_a_result(self):
# Without tzset, we can check only that it successfully
# produces a result, not the correctness of the result itself,
# since the result depends on the timezone the machine is in.
for t in self.timevalues():
imaplib.Time2Internaldate(t)
if ssl:
class SecureTCPServer(socketserver.TCPServer):
def get_request(self):
newsocket, fromaddr = self.socket.accept()
connstream = ssl.wrap_socket(newsocket,
server_side=True,
certfile=CERTFILE)
return connstream, fromaddr
IMAP4_SSL = imaplib.IMAP4_SSL
else:
class SecureTCPServer:
pass
IMAP4_SSL = None
class SimpleIMAPHandler(socketserver.StreamRequestHandler):
timeout = 1
continuation = None
capabilities = ''
def _send(self, message):
if verbose: print("SENT: %r" % message.strip())
self.wfile.write(message)
def _send_line(self, message):
self._send(message + b'\r\n')
def _send_textline(self, message):
self._send_line(message.encode('ASCII'))
def _send_tagged(self, tag, code, message):
self._send_textline(' '.join((tag, code, message)))
def handle(self):
# Send a welcome message.
self._send_textline('* OK IMAP4rev1')
while 1:
# Gather up input until we receive a line terminator or we timeout.
# Accumulate read(1) because it's simpler to handle the differences
# between naked sockets and SSL sockets.
line = b''
while 1:
try:
part = self.rfile.read(1)
if part == b'':
# Naked sockets return empty strings..
return
line += part
except OSError:
# ..but SSLSockets raise exceptions.
return
if line.endswith(b'\r\n'):
break
if verbose: print('GOT: %r' % line.strip())
if self.continuation:
try:
self.continuation.send(line)
except StopIteration:
self.continuation = None
continue
splitline = line.decode('ASCII').split()
tag = splitline[0]
cmd = splitline[1]
args = splitline[2:]
if hasattr(self, 'cmd_'+cmd):
continuation = getattr(self, 'cmd_'+cmd)(tag, args)
if continuation:
self.continuation = continuation
next(continuation)
else:
self._send_tagged(tag, 'BAD', cmd + ' unknown')
def cmd_CAPABILITY(self, tag, args):
caps = 'IMAP4rev1 ' + self.capabilities if self.capabilities else 'IMAP4rev1'
self._send_textline('* CAPABILITY ' + caps)
self._send_tagged(tag, 'OK', 'CAPABILITY completed')
def cmd_LOGOUT(self, tag, args):
self._send_textline('* BYE IMAP4ref1 Server logging out')
self._send_tagged(tag, 'OK', 'LOGOUT completed')
class BaseThreadedNetworkedTests(unittest.TestCase):
def make_server(self, addr, hdlr):
class MyServer(self.server_class):
def handle_error(self, request, client_address):
self.close_request(request)
self.server_close()
raise
if verbose: print("creating server")
server = MyServer(addr, hdlr)
self.assertEqual(server.server_address, server.socket.getsockname())
if verbose:
print("server created")
print("ADDR =", addr)
print("CLASS =", self.server_class)
print("HDLR =", server.RequestHandlerClass)
t = threading.Thread(
name='%s serving' % self.server_class,
target=server.serve_forever,
# Short poll interval to make the test finish quickly.
# Time between requests is short enough that we won't wake
# up spuriously too many times.
kwargs={'poll_interval':0.01})
t.daemon = True # In case this function raises.
t.start()
if verbose: print("server running")
return server, t
def reap_server(self, server, thread):
if verbose: print("waiting for server")
server.shutdown()
server.server_close()
thread.join()
if verbose: print("done")
@contextmanager
def reaped_server(self, hdlr):
server, thread = self.make_server((support.HOST, 0), hdlr)
try:
yield server
finally:
self.reap_server(server, thread)
@contextmanager
def reaped_pair(self, hdlr):
with self.reaped_server(hdlr) as server:
client = self.imap_class(*server.server_address)
try:
yield server, client
finally:
client.logout()
@reap_threads
def test_connect(self):
with self.reaped_server(SimpleIMAPHandler) as server:
client = self.imap_class(*server.server_address)
client.shutdown()
@reap_threads
def test_issue5949(self):
class EOFHandler(socketserver.StreamRequestHandler):
def handle(self):
# EOF without sending a complete welcome message.
self.wfile.write(b'* OK')
with self.reaped_server(EOFHandler) as server:
self.assertRaises(imaplib.IMAP4.abort,
self.imap_class, *server.server_address)
@reap_threads
def test_line_termination(self):
class BadNewlineHandler(SimpleIMAPHandler):
def cmd_CAPABILITY(self, tag, args):
self._send(b'* CAPABILITY IMAP4rev1 AUTH\n')
self._send_tagged(tag, 'OK', 'CAPABILITY completed')
with self.reaped_server(BadNewlineHandler) as server:
self.assertRaises(imaplib.IMAP4.abort,
self.imap_class, *server.server_address)
@reap_threads
def test_bad_auth_name(self):
class MyServer(SimpleIMAPHandler):
def cmd_AUTHENTICATE(self, tag, args):
self._send_tagged(tag, 'NO', 'unrecognized authentication '
'type {}'.format(args[0]))
with self.reaped_pair(MyServer) as (server, client):
with self.assertRaises(imaplib.IMAP4.error):
client.authenticate('METHOD', lambda: 1)
@reap_threads
def test_invalid_authentication(self):
class MyServer(SimpleIMAPHandler):
def cmd_AUTHENTICATE(self, tag, args):
self._send_textline('+')
self.response = yield
self._send_tagged(tag, 'NO', '[AUTHENTICATIONFAILED] invalid')
with self.reaped_pair(MyServer) as (server, client):
with self.assertRaises(imaplib.IMAP4.error):
code, data = client.authenticate('MYAUTH', lambda x: b'fake')
@reap_threads
def test_valid_authentication(self):
class MyServer(SimpleIMAPHandler):
def cmd_AUTHENTICATE(self, tag, args):
self._send_textline('+')
self.server.response = yield
self._send_tagged(tag, 'OK', 'FAKEAUTH successful')
with self.reaped_pair(MyServer) as (server, client):
code, data = client.authenticate('MYAUTH', lambda x: b'fake')
self.assertEqual(code, 'OK')
self.assertEqual(server.response,
b'ZmFrZQ==\r\n') #b64 encoded 'fake'
with self.reaped_pair(MyServer) as (server, client):
code, data = client.authenticate('MYAUTH', lambda x: 'fake')
self.assertEqual(code, 'OK')
self.assertEqual(server.response,
b'ZmFrZQ==\r\n') #b64 encoded 'fake'
@reap_threads
def test_login_cram_md5(self):
class AuthHandler(SimpleIMAPHandler):
capabilities = 'LOGINDISABLED AUTH=CRAM-MD5'
def cmd_AUTHENTICATE(self, tag, args):
self._send_textline('+ PDE4OTYuNjk3MTcwOTUyQHBvc3RvZmZpY2Uucm'
'VzdG9uLm1jaS5uZXQ=')
r = yield
if r == b'dGltIGYxY2E2YmU0NjRiOWVmYTFjY2E2ZmZkNmNmMmQ5ZjMy\r\n':
self._send_tagged(tag, 'OK', 'CRAM-MD5 successful')
else:
self._send_tagged(tag, 'NO', 'No access')
with self.reaped_pair(AuthHandler) as (server, client):
self.assertTrue('AUTH=CRAM-MD5' in client.capabilities)
ret, data = client.login_cram_md5("tim", "tanstaaftanstaaf")
self.assertEqual(ret, "OK")
with self.reaped_pair(AuthHandler) as (server, client):
self.assertTrue('AUTH=CRAM-MD5' in client.capabilities)
ret, data = client.login_cram_md5("tim", b"tanstaaftanstaaf")
self.assertEqual(ret, "OK")
@reap_threads
def test_aborted_authentication(self):
class MyServer(SimpleIMAPHandler):
def cmd_AUTHENTICATE(self, tag, args):
self._send_textline('+')
self.response = yield
if self.response == b'*\r\n':
self._send_tagged(tag, 'NO', '[AUTHENTICATIONFAILED] aborted')
else:
self._send_tagged(tag, 'OK', 'MYAUTH successful')
with self.reaped_pair(MyServer) as (server, client):
with self.assertRaises(imaplib.IMAP4.error):
code, data = client.authenticate('MYAUTH', lambda x: None)
def test_linetoolong(self):
class TooLongHandler(SimpleIMAPHandler):
def handle(self):
# Send a very long response line
self.wfile.write(b'* OK ' + imaplib._MAXLINE*b'x' + b'\r\n')
with self.reaped_server(TooLongHandler) as server:
self.assertRaises(imaplib.IMAP4.error,
self.imap_class, *server.server_address)
class ThreadedNetworkedTests(BaseThreadedNetworkedTests):
server_class = socketserver.TCPServer
imap_class = imaplib.IMAP4
@unittest.skipUnless(ssl, "SSL not available")
class ThreadedNetworkedTestsSSL(BaseThreadedNetworkedTests):
server_class = SecureTCPServer
imap_class = IMAP4_SSL
@reap_threads
def test_ssl_verified(self):
ssl_context = ssl.SSLContext(ssl.PROTOCOL_SSLv23)
ssl_context.verify_mode = ssl.CERT_REQUIRED
ssl_context.check_hostname = True
ssl_context.load_verify_locations(CAFILE)
with self.assertRaisesRegex(ssl.CertificateError,
"hostname '127.0.0.1' doesn't match 'localhost'"):
with self.reaped_server(SimpleIMAPHandler) as server:
client = self.imap_class(*server.server_address,
ssl_context=ssl_context)
client.shutdown()
with self.reaped_server(SimpleIMAPHandler) as server:
client = self.imap_class("localhost", server.server_address[1],
ssl_context=ssl_context)
client.shutdown()
class RemoteIMAPTest(unittest.TestCase):
host = 'cyrus.andrew.cmu.edu'
port = 143
username = 'anonymous'
password = 'pass'
imap_class = imaplib.IMAP4
def setUp(self):
with transient_internet(self.host):
self.server = self.imap_class(self.host, self.port)
def tearDown(self):
if self.server is not None:
with transient_internet(self.host):
self.server.logout()
def test_logincapa(self):
with transient_internet(self.host):
for cap in self.server.capabilities:
self.assertIsInstance(cap, str)
self.assertIn('LOGINDISABLED', self.server.capabilities)
self.assertIn('AUTH=ANONYMOUS', self.server.capabilities)
rs = self.server.login(self.username, self.password)
self.assertEqual(rs[0], 'OK')
def test_logout(self):
with transient_internet(self.host):
rs = self.server.logout()
self.server = None
self.assertEqual(rs[0], 'BYE')
@unittest.skipUnless(ssl, "SSL not available")
class RemoteIMAP_STARTTLSTest(RemoteIMAPTest):
def setUp(self):
super().setUp()
with transient_internet(self.host):
rs = self.server.starttls()
self.assertEqual(rs[0], 'OK')
def test_logincapa(self):
for cap in self.server.capabilities:
self.assertIsInstance(cap, str)
self.assertNotIn('LOGINDISABLED', self.server.capabilities)
@unittest.skipUnless(ssl, "SSL not available")
class RemoteIMAP_SSLTest(RemoteIMAPTest):
port = 993
imap_class = IMAP4_SSL
def setUp(self):
pass
def tearDown(self):
pass
def create_ssl_context(self):
ssl_context = ssl.SSLContext(ssl.PROTOCOL_SSLv23)
ssl_context.load_cert_chain(CERTFILE)
return ssl_context
def check_logincapa(self, server):
try:
for cap in server.capabilities:
self.assertIsInstance(cap, str)
self.assertNotIn('LOGINDISABLED', server.capabilities)
self.assertIn('AUTH=PLAIN', server.capabilities)
rs = server.login(self.username, self.password)
self.assertEqual(rs[0], 'OK')
finally:
server.logout()
def test_logincapa(self):
with transient_internet(self.host):
_server = self.imap_class(self.host, self.port)
self.check_logincapa(_server)
def test_logout(self):
with transient_internet(self.host):
_server = self.imap_class(self.host, self.port)
rs = _server.logout()
self.assertEqual(rs[0], 'BYE')
def test_ssl_context_certfile_exclusive(self):
with transient_internet(self.host):
self.assertRaises(ValueError, self.imap_class, self.host, self.port,
certfile=CERTFILE, ssl_context=self.create_ssl_context())
def test_ssl_context_keyfile_exclusive(self):
with transient_internet(self.host):
self.assertRaises(ValueError, self.imap_class, self.host, self.port,
keyfile=CERTFILE, ssl_context=self.create_ssl_context())
def load_tests(*args):
tests = [TestImaplib]
if support.is_resource_enabled('network'):
if ssl:
global CERTFILE, CAFILE
CERTFILE = os.path.join(os.path.dirname(__file__) or os.curdir,
"keycert3.pem")
if not os.path.exists(CERTFILE):
raise support.TestFailed("Can't read certificate files!")
CAFILE = os.path.join(os.path.dirname(__file__) or os.curdir,
"pycacert.pem")
if not os.path.exists(CAFILE):
raise support.TestFailed("Can't read CA file!")
tests.extend([
ThreadedNetworkedTests, ThreadedNetworkedTestsSSL,
RemoteIMAPTest, RemoteIMAP_SSLTest, RemoteIMAP_STARTTLSTest,
])
return unittest.TestSuite([unittest.makeSuite(test) for test in tests])
if __name__ == "__main__":
unittest.main()