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4634676cec
The RFC doesn't say that they are allowed; apparently many mailers accept them, but not postfix. Contributions to this patch were made by Felipe Cruz and Catalin Iacob. The changeset also adds additional indirect tests for quoteaddr (null address and IDNA-encoded address).
769 lines
28 KiB
Python
769 lines
28 KiB
Python
import asyncore
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import email.mime.text
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import email.utils
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import socket
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import smtpd
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import smtplib
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import io
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import re
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import sys
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import time
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import select
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import unittest
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from test import support, mock_socket
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try:
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import threading
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except ImportError:
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threading = None
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HOST = support.HOST
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if sys.platform == 'darwin':
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# select.poll returns a select.POLLHUP at the end of the tests
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# on darwin, so just ignore it
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def handle_expt(self):
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pass
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smtpd.SMTPChannel.handle_expt = handle_expt
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def server(evt, buf, serv):
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serv.listen(5)
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evt.set()
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try:
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conn, addr = serv.accept()
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except socket.timeout:
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pass
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else:
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n = 500
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while buf and n > 0:
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r, w, e = select.select([], [conn], [])
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if w:
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sent = conn.send(buf)
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buf = buf[sent:]
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n -= 1
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conn.close()
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finally:
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serv.close()
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evt.set()
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class GeneralTests(unittest.TestCase):
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def setUp(self):
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smtplib.socket = mock_socket
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self.port = 25
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def tearDown(self):
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smtplib.socket = socket
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# This method is no longer used but is retained for backward compatibility,
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# so test to make sure it still works.
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def testQuoteData(self):
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teststr = "abc\n.jkl\rfoo\r\n..blue"
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expected = "abc\r\n..jkl\r\nfoo\r\n...blue"
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self.assertEqual(expected, smtplib.quotedata(teststr))
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def testBasic1(self):
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mock_socket.reply_with(b"220 Hola mundo")
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# connects
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smtp = smtplib.SMTP(HOST, self.port)
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smtp.close()
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def testBasic2(self):
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mock_socket.reply_with(b"220 Hola mundo")
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# connects, include port in host name
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smtp = smtplib.SMTP("%s:%s" % (HOST, self.port))
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smtp.close()
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def testLocalHostName(self):
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mock_socket.reply_with(b"220 Hola mundo")
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# check that supplied local_hostname is used
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smtp = smtplib.SMTP(HOST, self.port, local_hostname="testhost")
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self.assertEqual(smtp.local_hostname, "testhost")
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smtp.close()
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def testTimeoutDefault(self):
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mock_socket.reply_with(b"220 Hola mundo")
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self.assertTrue(mock_socket.getdefaulttimeout() is None)
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mock_socket.setdefaulttimeout(30)
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self.assertEqual(mock_socket.getdefaulttimeout(), 30)
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try:
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smtp = smtplib.SMTP(HOST, self.port)
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finally:
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mock_socket.setdefaulttimeout(None)
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self.assertEqual(smtp.sock.gettimeout(), 30)
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smtp.close()
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def testTimeoutNone(self):
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mock_socket.reply_with(b"220 Hola mundo")
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self.assertTrue(socket.getdefaulttimeout() is None)
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socket.setdefaulttimeout(30)
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try:
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smtp = smtplib.SMTP(HOST, self.port, timeout=None)
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finally:
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socket.setdefaulttimeout(None)
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self.assertTrue(smtp.sock.gettimeout() is None)
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smtp.close()
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def testTimeoutValue(self):
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mock_socket.reply_with(b"220 Hola mundo")
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smtp = smtplib.SMTP(HOST, self.port, timeout=30)
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self.assertEqual(smtp.sock.gettimeout(), 30)
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smtp.close()
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# Test server thread using the specified SMTP server class
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def debugging_server(serv, serv_evt, client_evt):
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serv_evt.set()
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try:
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if hasattr(select, 'poll'):
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poll_fun = asyncore.poll2
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else:
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poll_fun = asyncore.poll
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n = 1000
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while asyncore.socket_map and n > 0:
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poll_fun(0.01, asyncore.socket_map)
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# when the client conversation is finished, it will
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# set client_evt, and it's then ok to kill the server
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if client_evt.is_set():
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serv.close()
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break
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n -= 1
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except socket.timeout:
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pass
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finally:
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if not client_evt.is_set():
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# allow some time for the client to read the result
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time.sleep(0.5)
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serv.close()
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asyncore.close_all()
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serv_evt.set()
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MSG_BEGIN = '---------- MESSAGE FOLLOWS ----------\n'
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MSG_END = '------------ END MESSAGE ------------\n'
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# NOTE: Some SMTP objects in the tests below are created with a non-default
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# local_hostname argument to the constructor, since (on some systems) the FQDN
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# lookup caused by the default local_hostname sometimes takes so long that the
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# test server times out, causing the test to fail.
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# Test behavior of smtpd.DebuggingServer
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@unittest.skipUnless(threading, 'Threading required for this test.')
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class DebuggingServerTests(unittest.TestCase):
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maxDiff = None
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def setUp(self):
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self.real_getfqdn = socket.getfqdn
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socket.getfqdn = mock_socket.getfqdn
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# temporarily replace sys.stdout to capture DebuggingServer output
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self.old_stdout = sys.stdout
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self.output = io.StringIO()
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sys.stdout = self.output
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self._threads = support.threading_setup()
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self.serv_evt = threading.Event()
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self.client_evt = threading.Event()
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# Capture SMTPChannel debug output
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self.old_DEBUGSTREAM = smtpd.DEBUGSTREAM
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smtpd.DEBUGSTREAM = io.StringIO()
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# Pick a random unused port by passing 0 for the port number
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self.serv = smtpd.DebuggingServer((HOST, 0), ('nowhere', -1))
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# Keep a note of what port was assigned
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self.port = self.serv.socket.getsockname()[1]
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serv_args = (self.serv, self.serv_evt, self.client_evt)
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self.thread = threading.Thread(target=debugging_server, args=serv_args)
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self.thread.start()
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# wait until server thread has assigned a port number
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self.serv_evt.wait()
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self.serv_evt.clear()
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def tearDown(self):
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socket.getfqdn = self.real_getfqdn
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# indicate that the client is finished
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self.client_evt.set()
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# wait for the server thread to terminate
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self.serv_evt.wait()
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self.thread.join()
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support.threading_cleanup(*self._threads)
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# restore sys.stdout
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sys.stdout = self.old_stdout
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# restore DEBUGSTREAM
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smtpd.DEBUGSTREAM.close()
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smtpd.DEBUGSTREAM = self.old_DEBUGSTREAM
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def testBasic(self):
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# connect
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smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
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smtp.quit()
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def testNOOP(self):
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smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
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expected = (250, b'Ok')
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self.assertEqual(smtp.noop(), expected)
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smtp.quit()
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def testRSET(self):
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smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
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expected = (250, b'Ok')
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self.assertEqual(smtp.rset(), expected)
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smtp.quit()
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def testNotImplemented(self):
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# EHLO isn't implemented in DebuggingServer
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smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
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expected = (502, b'Error: command "EHLO" not implemented')
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self.assertEqual(smtp.ehlo(), expected)
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smtp.quit()
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def testVRFY(self):
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# VRFY isn't implemented in DebuggingServer
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smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
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expected = (502, b'Error: command "VRFY" not implemented')
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self.assertEqual(smtp.vrfy('nobody@nowhere.com'), expected)
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self.assertEqual(smtp.verify('nobody@nowhere.com'), expected)
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smtp.quit()
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def testSecondHELO(self):
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# check that a second HELO returns a message that it's a duplicate
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# (this behavior is specific to smtpd.SMTPChannel)
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smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
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smtp.helo()
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expected = (503, b'Duplicate HELO/EHLO')
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self.assertEqual(smtp.helo(), expected)
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smtp.quit()
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def testHELP(self):
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smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
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self.assertEqual(smtp.help(), b'Error: command "HELP" not implemented')
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smtp.quit()
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def testSend(self):
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# connect and send mail
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m = 'A test message'
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smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
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smtp.sendmail('John', 'Sally', m)
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# XXX(nnorwitz): this test is flaky and dies with a bad file descriptor
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# in asyncore. This sleep might help, but should really be fixed
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# properly by using an Event variable.
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time.sleep(0.01)
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smtp.quit()
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self.client_evt.set()
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self.serv_evt.wait()
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self.output.flush()
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mexpect = '%s%s\n%s' % (MSG_BEGIN, m, MSG_END)
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self.assertEqual(self.output.getvalue(), mexpect)
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def testSendBinary(self):
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m = b'A test message'
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smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
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smtp.sendmail('John', 'Sally', m)
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# XXX (see comment in testSend)
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time.sleep(0.01)
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smtp.quit()
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self.client_evt.set()
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self.serv_evt.wait()
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self.output.flush()
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mexpect = '%s%s\n%s' % (MSG_BEGIN, m.decode('ascii'), MSG_END)
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self.assertEqual(self.output.getvalue(), mexpect)
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def testSendNeedingDotQuote(self):
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# Issue 12283
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m = '.A test\n.mes.sage.'
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smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
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smtp.sendmail('John', 'Sally', m)
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# XXX (see comment in testSend)
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time.sleep(0.01)
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smtp.quit()
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self.client_evt.set()
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self.serv_evt.wait()
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self.output.flush()
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mexpect = '%s%s\n%s' % (MSG_BEGIN, m, MSG_END)
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self.assertEqual(self.output.getvalue(), mexpect)
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def testSendNullSender(self):
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m = 'A test message'
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smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
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smtp.sendmail('<>', 'Sally', m)
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# XXX (see comment in testSend)
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time.sleep(0.01)
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smtp.quit()
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self.client_evt.set()
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self.serv_evt.wait()
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self.output.flush()
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mexpect = '%s%s\n%s' % (MSG_BEGIN, m, MSG_END)
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self.assertEqual(self.output.getvalue(), mexpect)
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debugout = smtpd.DEBUGSTREAM.getvalue()
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sender = re.compile("^sender: <>$", re.MULTILINE)
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self.assertRegex(debugout, sender)
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def testSendMessage(self):
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m = email.mime.text.MIMEText('A test message')
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smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
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smtp.send_message(m, from_addr='John', to_addrs='Sally')
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# XXX (see comment in testSend)
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time.sleep(0.01)
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smtp.quit()
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self.client_evt.set()
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self.serv_evt.wait()
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self.output.flush()
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# Add the X-Peer header that DebuggingServer adds
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m['X-Peer'] = socket.gethostbyname('localhost')
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mexpect = '%s%s\n%s' % (MSG_BEGIN, m.as_string(), MSG_END)
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self.assertEqual(self.output.getvalue(), mexpect)
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def testSendMessageWithAddresses(self):
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m = email.mime.text.MIMEText('A test message')
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m['From'] = 'foo@bar.com'
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m['To'] = 'John'
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m['CC'] = 'Sally, Fred'
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m['Bcc'] = 'John Root <root@localhost>, "Dinsdale" <warped@silly.walks.com>'
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smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
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smtp.send_message(m)
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# XXX (see comment in testSend)
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time.sleep(0.01)
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smtp.quit()
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# make sure the Bcc header is still in the message.
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self.assertEqual(m['Bcc'], 'John Root <root@localhost>, "Dinsdale" '
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'<warped@silly.walks.com>')
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self.client_evt.set()
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self.serv_evt.wait()
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self.output.flush()
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# Add the X-Peer header that DebuggingServer adds
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m['X-Peer'] = socket.gethostbyname('localhost')
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# The Bcc header should not be transmitted.
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del m['Bcc']
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mexpect = '%s%s\n%s' % (MSG_BEGIN, m.as_string(), MSG_END)
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self.assertEqual(self.output.getvalue(), mexpect)
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debugout = smtpd.DEBUGSTREAM.getvalue()
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sender = re.compile("^sender: foo@bar.com$", re.MULTILINE)
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self.assertRegex(debugout, sender)
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for addr in ('John', 'Sally', 'Fred', 'root@localhost',
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'warped@silly.walks.com'):
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to_addr = re.compile(r"^recips: .*'{}'.*$".format(addr),
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re.MULTILINE)
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self.assertRegex(debugout, to_addr)
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def testSendMessageWithSomeAddresses(self):
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# Make sure nothing breaks if not all of the three 'to' headers exist
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m = email.mime.text.MIMEText('A test message')
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m['From'] = 'foo@bar.com'
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m['To'] = 'John, Dinsdale'
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smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
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smtp.send_message(m)
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# XXX (see comment in testSend)
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time.sleep(0.01)
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smtp.quit()
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self.client_evt.set()
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self.serv_evt.wait()
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self.output.flush()
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# Add the X-Peer header that DebuggingServer adds
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m['X-Peer'] = socket.gethostbyname('localhost')
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mexpect = '%s%s\n%s' % (MSG_BEGIN, m.as_string(), MSG_END)
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self.assertEqual(self.output.getvalue(), mexpect)
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debugout = smtpd.DEBUGSTREAM.getvalue()
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sender = re.compile("^sender: foo@bar.com$", re.MULTILINE)
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self.assertRegex(debugout, sender)
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for addr in ('John', 'Dinsdale'):
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to_addr = re.compile(r"^recips: .*'{}'.*$".format(addr),
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re.MULTILINE)
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self.assertRegex(debugout, to_addr)
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def testSendMessageWithSpecifiedAddresses(self):
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# Make sure addresses specified in call override those in message.
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m = email.mime.text.MIMEText('A test message')
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m['From'] = 'foo@bar.com'
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m['To'] = 'John, Dinsdale'
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smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
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smtp.send_message(m, from_addr='joe@example.com', to_addrs='foo@example.net')
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# XXX (see comment in testSend)
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time.sleep(0.01)
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smtp.quit()
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self.client_evt.set()
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self.serv_evt.wait()
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self.output.flush()
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# Add the X-Peer header that DebuggingServer adds
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m['X-Peer'] = socket.gethostbyname('localhost')
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mexpect = '%s%s\n%s' % (MSG_BEGIN, m.as_string(), MSG_END)
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self.assertEqual(self.output.getvalue(), mexpect)
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debugout = smtpd.DEBUGSTREAM.getvalue()
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sender = re.compile("^sender: joe@example.com$", re.MULTILINE)
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self.assertRegex(debugout, sender)
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for addr in ('John', 'Dinsdale'):
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to_addr = re.compile(r"^recips: .*'{}'.*$".format(addr),
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re.MULTILINE)
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self.assertNotRegex(debugout, to_addr)
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recip = re.compile(r"^recips: .*'foo@example.net'.*$", re.MULTILINE)
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self.assertRegex(debugout, recip)
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def testSendMessageWithMultipleFrom(self):
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# Sender overrides To
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m = email.mime.text.MIMEText('A test message')
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m['From'] = 'Bernard, Bianca'
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m['Sender'] = 'the_rescuers@Rescue-Aid-Society.com'
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m['To'] = 'John, Dinsdale'
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smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=3)
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smtp.send_message(m)
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# XXX (see comment in testSend)
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time.sleep(0.01)
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smtp.quit()
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self.client_evt.set()
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self.serv_evt.wait()
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self.output.flush()
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# Add the X-Peer header that DebuggingServer adds
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m['X-Peer'] = socket.gethostbyname('localhost')
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mexpect = '%s%s\n%s' % (MSG_BEGIN, m.as_string(), MSG_END)
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self.assertEqual(self.output.getvalue(), mexpect)
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debugout = smtpd.DEBUGSTREAM.getvalue()
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sender = re.compile("^sender: the_rescuers@Rescue-Aid-Society.com$", re.MULTILINE)
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self.assertRegex(debugout, sender)
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for addr in ('John', 'Dinsdale'):
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to_addr = re.compile(r"^recips: .*'{}'.*$".format(addr),
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re.MULTILINE)
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self.assertRegex(debugout, to_addr)
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|
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def testSendMessageResent(self):
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m = email.mime.text.MIMEText('A test message')
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m['From'] = 'foo@bar.com'
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m['To'] = 'John'
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m['CC'] = 'Sally, Fred'
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m['Bcc'] = 'John Root <root@localhost>, "Dinsdale" <warped@silly.walks.com>'
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m['Resent-Date'] = 'Thu, 1 Jan 1970 17:42:00 +0000'
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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 setUp(self):
|
|
smtplib.socket = mock_socket
|
|
|
|
def tearDown(self):
|
|
smtplib.socket = socket
|
|
|
|
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 socket.error
|
|
self.assertRaises(mock_socket.error, smtplib.SMTP,
|
|
"localhost", "bogus")
|
|
self.assertRaises(mock_socket.error, 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)
|
|
|
|
|
|
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_password = 'C29TZXBHC3N3B3JK'
|
|
|
|
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):
|
|
|
|
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)
|
|
|
|
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):
|
|
if arg.strip().lower()=='cram-md5':
|
|
self.push('334 {}'.format(sim_cram_md5_challenge))
|
|
return
|
|
mech, auth = arg.split()
|
|
mech = mech.lower()
|
|
if mech not in sim_auth_credentials:
|
|
self.push('504 auth type unimplemented')
|
|
return
|
|
if mech == 'plain' and auth==sim_auth_credentials['plain']:
|
|
self.push('235 plain auth ok')
|
|
elif mech=='login' and auth==sim_auth_credentials['login']:
|
|
self.push('334 Password:')
|
|
else:
|
|
self.push('550 No access for you!')
|
|
|
|
def handle_error(self):
|
|
raise
|
|
|
|
|
|
class SimSMTPServer(smtpd.SMTPServer):
|
|
|
|
def __init__(self, *args, **kw):
|
|
self._extra_features = []
|
|
smtpd.SMTPServer.__init__(self, *args, **kw)
|
|
|
|
def handle_accepted(self, conn, addr):
|
|
self._SMTPchannel = SimSMTPChannel(self._extra_features,
|
|
self, conn, addr)
|
|
|
|
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._threads = support.threading_setup()
|
|
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))
|
|
# 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()
|
|
support.threading_cleanup(*self._threads)
|
|
|
|
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 email, name in sim_users.items():
|
|
expected_known = (250, bytes('%s %s' %
|
|
(name, smtplib.quoteaddr(email)),
|
|
"ascii"))
|
|
self.assertEqual(smtp.vrfy(email), 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()
|
|
|
|
def testAUTH_PLAIN(self):
|
|
self.serv.add_feature("AUTH PLAIN")
|
|
smtp = smtplib.SMTP(HOST, self.port, local_hostname='localhost', timeout=15)
|
|
|
|
expected_auth_ok = (235, b'plain auth ok')
|
|
self.assertEqual(smtp.login(sim_auth[0], sim_auth[1]), expected_auth_ok)
|
|
smtp.close()
|
|
|
|
# SimSMTPChannel doesn't fully support LOGIN or CRAM-MD5 auth because they
|
|
# require 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_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_password, 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()
|
|
|
|
#TODO: add tests for correct AUTH method fallback now that the
|
|
#test infrastructure can support it.
|
|
|
|
|
|
def test_main(verbose=None):
|
|
support.run_unittest(GeneralTests, DebuggingServerTests,
|
|
NonConnectingTests,
|
|
BadHELOServerTests, SMTPSimTests)
|
|
|
|
if __name__ == '__main__':
|
|
test_main()
|