diff options
Diffstat (limited to 'Lib/test/test_smtpd.py')
| -rw-r--r-- | Lib/test/test_smtpd.py | 1018 |
1 files changed, 1018 insertions, 0 deletions
diff --git a/Lib/test/test_smtpd.py b/Lib/test/test_smtpd.py new file mode 100644 index 0000000..d2e150d --- /dev/null +++ b/Lib/test/test_smtpd.py @@ -0,0 +1,1018 @@ +import unittest +import textwrap +from test import support, mock_socket +from test.support import socket_helper +from test.support import warnings_helper +import socket +import io + +import warnings +with warnings.catch_warnings(): + warnings.simplefilter('ignore', DeprecationWarning) + import smtpd + import asyncore + + +class DummyServer(smtpd.SMTPServer): + def __init__(self, *args, **kwargs): + smtpd.SMTPServer.__init__(self, *args, **kwargs) + self.messages = [] + if self._decode_data: + self.return_status = 'return status' + else: + self.return_status = b'return status' + + def process_message(self, peer, mailfrom, rcpttos, data, **kw): + self.messages.append((peer, mailfrom, rcpttos, data)) + if data == self.return_status: + return '250 Okish' + if 'mail_options' in kw and 'SMTPUTF8' in kw['mail_options']: + return '250 SMTPUTF8 message okish' + + +class DummyDispatcherBroken(Exception): + pass + + +class BrokenDummyServer(DummyServer): + def listen(self, num): + raise DummyDispatcherBroken() + + +class SMTPDServerTest(unittest.TestCase): + def setUp(self): + smtpd.socket = asyncore.socket = mock_socket + + def test_process_message_unimplemented(self): + server = smtpd.SMTPServer((socket_helper.HOST, 0), ('b', 0), + decode_data=True) + conn, addr = server.accept() + channel = smtpd.SMTPChannel(server, conn, addr, decode_data=True) + + def write_line(line): + channel.socket.queue_recv(line) + channel.handle_read() + + write_line(b'HELO example') + write_line(b'MAIL From:eggs@example') + write_line(b'RCPT To:spam@example') + write_line(b'DATA') + self.assertRaises(NotImplementedError, write_line, b'spam\r\n.\r\n') + + def test_decode_data_and_enable_SMTPUTF8_raises(self): + self.assertRaises( + ValueError, + smtpd.SMTPServer, + (socket_helper.HOST, 0), + ('b', 0), + enable_SMTPUTF8=True, + decode_data=True) + + def tearDown(self): + asyncore.close_all() + asyncore.socket = smtpd.socket = socket + + +class DebuggingServerTest(unittest.TestCase): + + def setUp(self): + smtpd.socket = asyncore.socket = mock_socket + + def send_data(self, channel, data, enable_SMTPUTF8=False): + def write_line(line): + channel.socket.queue_recv(line) + channel.handle_read() + write_line(b'EHLO example') + if enable_SMTPUTF8: + write_line(b'MAIL From:eggs@example BODY=8BITMIME SMTPUTF8') + else: + write_line(b'MAIL From:eggs@example') + write_line(b'RCPT To:spam@example') + write_line(b'DATA') + write_line(data) + write_line(b'.') + + def test_process_message_with_decode_data_true(self): + server = smtpd.DebuggingServer((socket_helper.HOST, 0), ('b', 0), + decode_data=True) + conn, addr = server.accept() + channel = smtpd.SMTPChannel(server, conn, addr, decode_data=True) + with support.captured_stdout() as s: + self.send_data(channel, b'From: test\n\nhello\n') + stdout = s.getvalue() + self.assertEqual(stdout, textwrap.dedent("""\ + ---------- MESSAGE FOLLOWS ---------- + From: test + X-Peer: peer-address + + hello + ------------ END MESSAGE ------------ + """)) + + def test_process_message_with_decode_data_false(self): + server = smtpd.DebuggingServer((socket_helper.HOST, 0), ('b', 0)) + conn, addr = server.accept() + channel = smtpd.SMTPChannel(server, conn, addr) + with support.captured_stdout() as s: + self.send_data(channel, b'From: test\n\nh\xc3\xa9llo\xff\n') + stdout = s.getvalue() + self.assertEqual(stdout, textwrap.dedent("""\ + ---------- MESSAGE FOLLOWS ---------- + b'From: test' + b'X-Peer: peer-address' + b'' + b'h\\xc3\\xa9llo\\xff' + ------------ END MESSAGE ------------ + """)) + + def test_process_message_with_enable_SMTPUTF8_true(self): + server = smtpd.DebuggingServer((socket_helper.HOST, 0), ('b', 0), + enable_SMTPUTF8=True) + conn, addr = server.accept() + channel = smtpd.SMTPChannel(server, conn, addr, enable_SMTPUTF8=True) + with support.captured_stdout() as s: + self.send_data(channel, b'From: test\n\nh\xc3\xa9llo\xff\n') + stdout = s.getvalue() + self.assertEqual(stdout, textwrap.dedent("""\ + ---------- MESSAGE FOLLOWS ---------- + b'From: test' + b'X-Peer: peer-address' + b'' + b'h\\xc3\\xa9llo\\xff' + ------------ END MESSAGE ------------ + """)) + + def test_process_SMTPUTF8_message_with_enable_SMTPUTF8_true(self): + server = smtpd.DebuggingServer((socket_helper.HOST, 0), ('b', 0), + enable_SMTPUTF8=True) + conn, addr = server.accept() + channel = smtpd.SMTPChannel(server, conn, addr, enable_SMTPUTF8=True) + with support.captured_stdout() as s: + self.send_data(channel, b'From: test\n\nh\xc3\xa9llo\xff\n', + enable_SMTPUTF8=True) + stdout = s.getvalue() + self.assertEqual(stdout, textwrap.dedent("""\ + ---------- MESSAGE FOLLOWS ---------- + mail options: ['BODY=8BITMIME', 'SMTPUTF8'] + b'From: test' + b'X-Peer: peer-address' + b'' + b'h\\xc3\\xa9llo\\xff' + ------------ END MESSAGE ------------ + """)) + + def tearDown(self): + asyncore.close_all() + asyncore.socket = smtpd.socket = socket + + +class TestFamilyDetection(unittest.TestCase): + def setUp(self): + smtpd.socket = asyncore.socket = mock_socket + + def tearDown(self): + asyncore.close_all() + asyncore.socket = smtpd.socket = socket + + @unittest.skipUnless(socket_helper.IPV6_ENABLED, "IPv6 not enabled") + def test_socket_uses_IPv6(self): + server = smtpd.SMTPServer((socket_helper.HOSTv6, 0), (socket_helper.HOSTv4, 0)) + self.assertEqual(server.socket.family, socket.AF_INET6) + + def test_socket_uses_IPv4(self): + server = smtpd.SMTPServer((socket_helper.HOSTv4, 0), (socket_helper.HOSTv6, 0)) + self.assertEqual(server.socket.family, socket.AF_INET) + + +class TestRcptOptionParsing(unittest.TestCase): + error_response = (b'555 RCPT TO parameters not recognized or not ' + b'implemented\r\n') + + def setUp(self): + smtpd.socket = asyncore.socket = mock_socket + self.old_debugstream = smtpd.DEBUGSTREAM + self.debug = smtpd.DEBUGSTREAM = io.StringIO() + + def tearDown(self): + asyncore.close_all() + asyncore.socket = smtpd.socket = socket + smtpd.DEBUGSTREAM = self.old_debugstream + + def write_line(self, channel, line): + channel.socket.queue_recv(line) + channel.handle_read() + + def test_params_rejected(self): + server = DummyServer((socket_helper.HOST, 0), ('b', 0)) + conn, addr = server.accept() + channel = smtpd.SMTPChannel(server, conn, addr) + self.write_line(channel, b'EHLO example') + self.write_line(channel, b'MAIL from: <foo@example.com> size=20') + self.write_line(channel, b'RCPT to: <foo@example.com> foo=bar') + self.assertEqual(channel.socket.last, self.error_response) + + def test_nothing_accepted(self): + server = DummyServer((socket_helper.HOST, 0), ('b', 0)) + conn, addr = server.accept() + channel = smtpd.SMTPChannel(server, conn, addr) + self.write_line(channel, b'EHLO example') + self.write_line(channel, b'MAIL from: <foo@example.com> size=20') + self.write_line(channel, b'RCPT to: <foo@example.com>') + self.assertEqual(channel.socket.last, b'250 OK\r\n') + + +class TestMailOptionParsing(unittest.TestCase): + error_response = (b'555 MAIL FROM parameters not recognized or not ' + b'implemented\r\n') + + def setUp(self): + smtpd.socket = asyncore.socket = mock_socket + self.old_debugstream = smtpd.DEBUGSTREAM + self.debug = smtpd.DEBUGSTREAM = io.StringIO() + + def tearDown(self): + asyncore.close_all() + asyncore.socket = smtpd.socket = socket + smtpd.DEBUGSTREAM = self.old_debugstream + + def write_line(self, channel, line): + channel.socket.queue_recv(line) + channel.handle_read() + + def test_with_decode_data_true(self): + server = DummyServer((socket_helper.HOST, 0), ('b', 0), decode_data=True) + conn, addr = server.accept() + channel = smtpd.SMTPChannel(server, conn, addr, decode_data=True) + self.write_line(channel, b'EHLO example') + for line in [ + b'MAIL from: <foo@example.com> size=20 SMTPUTF8', + b'MAIL from: <foo@example.com> size=20 SMTPUTF8 BODY=8BITMIME', + b'MAIL from: <foo@example.com> size=20 BODY=UNKNOWN', + b'MAIL from: <foo@example.com> size=20 body=8bitmime', + ]: + self.write_line(channel, line) + self.assertEqual(channel.socket.last, self.error_response) + self.write_line(channel, b'MAIL from: <foo@example.com> size=20') + self.assertEqual(channel.socket.last, b'250 OK\r\n') + + def test_with_decode_data_false(self): + server = DummyServer((socket_helper.HOST, 0), ('b', 0)) + conn, addr = server.accept() + channel = smtpd.SMTPChannel(server, conn, addr) + self.write_line(channel, b'EHLO example') + for line in [ + b'MAIL from: <foo@example.com> size=20 SMTPUTF8', + b'MAIL from: <foo@example.com> size=20 SMTPUTF8 BODY=8BITMIME', + ]: + self.write_line(channel, line) + self.assertEqual(channel.socket.last, self.error_response) + self.write_line( + channel, + b'MAIL from: <foo@example.com> size=20 SMTPUTF8 BODY=UNKNOWN') + self.assertEqual( + channel.socket.last, + b'501 Error: BODY can only be one of 7BIT, 8BITMIME\r\n') + self.write_line( + channel, b'MAIL from: <foo@example.com> size=20 body=8bitmime') + self.assertEqual(channel.socket.last, b'250 OK\r\n') + + def test_with_enable_smtputf8_true(self): + server = DummyServer((socket_helper.HOST, 0), ('b', 0), enable_SMTPUTF8=True) + conn, addr = server.accept() + channel = smtpd.SMTPChannel(server, conn, addr, enable_SMTPUTF8=True) + self.write_line(channel, b'EHLO example') + self.write_line( + channel, + b'MAIL from: <foo@example.com> size=20 body=8bitmime smtputf8') + self.assertEqual(channel.socket.last, b'250 OK\r\n') + + +class SMTPDChannelTest(unittest.TestCase): + def setUp(self): + smtpd.socket = asyncore.socket = mock_socket + self.old_debugstream = smtpd.DEBUGSTREAM + self.debug = smtpd.DEBUGSTREAM = io.StringIO() + self.server = DummyServer((socket_helper.HOST, 0), ('b', 0), + decode_data=True) + conn, addr = self.server.accept() + self.channel = smtpd.SMTPChannel(self.server, conn, addr, + decode_data=True) + + def tearDown(self): + asyncore.close_all() + asyncore.socket = smtpd.socket = socket + smtpd.DEBUGSTREAM = self.old_debugstream + + def write_line(self, line): + self.channel.socket.queue_recv(line) + self.channel.handle_read() + + def test_broken_connect(self): + self.assertRaises( + DummyDispatcherBroken, BrokenDummyServer, + (socket_helper.HOST, 0), ('b', 0), decode_data=True) + + def test_decode_data_and_enable_SMTPUTF8_raises(self): + self.assertRaises( + ValueError, smtpd.SMTPChannel, + self.server, self.channel.conn, self.channel.addr, + enable_SMTPUTF8=True, decode_data=True) + + def test_server_accept(self): + self.server.handle_accept() + + def test_missing_data(self): + self.write_line(b'') + self.assertEqual(self.channel.socket.last, + b'500 Error: bad syntax\r\n') + + def test_EHLO(self): + self.write_line(b'EHLO example') + self.assertEqual(self.channel.socket.last, b'250 HELP\r\n') + + def test_EHLO_bad_syntax(self): + self.write_line(b'EHLO') + self.assertEqual(self.channel.socket.last, + b'501 Syntax: EHLO hostname\r\n') + + def test_EHLO_duplicate(self): + self.write_line(b'EHLO example') + self.write_line(b'EHLO example') + self.assertEqual(self.channel.socket.last, + b'503 Duplicate HELO/EHLO\r\n') + + def test_EHLO_HELO_duplicate(self): + self.write_line(b'EHLO example') + self.write_line(b'HELO example') + self.assertEqual(self.channel.socket.last, + b'503 Duplicate HELO/EHLO\r\n') + + def test_HELO(self): + name = smtpd.socket.getfqdn() + self.write_line(b'HELO example') + self.assertEqual(self.channel.socket.last, + '250 {}\r\n'.format(name).encode('ascii')) + + def test_HELO_EHLO_duplicate(self): + self.write_line(b'HELO example') + self.write_line(b'EHLO example') + self.assertEqual(self.channel.socket.last, + b'503 Duplicate HELO/EHLO\r\n') + + def test_HELP(self): + self.write_line(b'HELP') + self.assertEqual(self.channel.socket.last, + b'250 Supported commands: EHLO HELO MAIL RCPT ' + \ + b'DATA RSET NOOP QUIT VRFY\r\n') + + def test_HELP_command(self): + self.write_line(b'HELP MAIL') + self.assertEqual(self.channel.socket.last, + b'250 Syntax: MAIL FROM: <address>\r\n') + + def test_HELP_command_unknown(self): + self.write_line(b'HELP SPAM') + self.assertEqual(self.channel.socket.last, + b'501 Supported commands: EHLO HELO MAIL RCPT ' + \ + b'DATA RSET NOOP QUIT VRFY\r\n') + + def test_HELO_bad_syntax(self): + self.write_line(b'HELO') + self.assertEqual(self.channel.socket.last, + b'501 Syntax: HELO hostname\r\n') + + def test_HELO_duplicate(self): + self.write_line(b'HELO example') + self.write_line(b'HELO example') + self.assertEqual(self.channel.socket.last, + b'503 Duplicate HELO/EHLO\r\n') + + def test_HELO_parameter_rejected_when_extensions_not_enabled(self): + self.extended_smtp = False + self.write_line(b'HELO example') + self.write_line(b'MAIL from:<foo@example.com> SIZE=1234') + self.assertEqual(self.channel.socket.last, + b'501 Syntax: MAIL FROM: <address>\r\n') + + def test_MAIL_allows_space_after_colon(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL from: <foo@example.com>') + self.assertEqual(self.channel.socket.last, + b'250 OK\r\n') + + def test_extended_MAIL_allows_space_after_colon(self): + self.write_line(b'EHLO example') + self.write_line(b'MAIL from: <foo@example.com> size=20') + self.assertEqual(self.channel.socket.last, + b'250 OK\r\n') + + def test_NOOP(self): + self.write_line(b'NOOP') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + + def test_HELO_NOOP(self): + self.write_line(b'HELO example') + self.write_line(b'NOOP') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + + def test_NOOP_bad_syntax(self): + self.write_line(b'NOOP hi') + self.assertEqual(self.channel.socket.last, + b'501 Syntax: NOOP\r\n') + + def test_QUIT(self): + self.write_line(b'QUIT') + self.assertEqual(self.channel.socket.last, b'221 Bye\r\n') + + def test_HELO_QUIT(self): + self.write_line(b'HELO example') + self.write_line(b'QUIT') + self.assertEqual(self.channel.socket.last, b'221 Bye\r\n') + + def test_QUIT_arg_ignored(self): + self.write_line(b'QUIT bye bye') + self.assertEqual(self.channel.socket.last, b'221 Bye\r\n') + + def test_bad_state(self): + self.channel.smtp_state = 'BAD STATE' + self.write_line(b'HELO example') + self.assertEqual(self.channel.socket.last, + b'451 Internal confusion\r\n') + + def test_command_too_long(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL from: ' + + b'a' * self.channel.command_size_limit + + b'@example') + self.assertEqual(self.channel.socket.last, + b'500 Error: line too long\r\n') + + def test_MAIL_command_limit_extended_with_SIZE(self): + self.write_line(b'EHLO example') + fill_len = self.channel.command_size_limit - len('MAIL from:<@example>') + self.write_line(b'MAIL from:<' + + b'a' * fill_len + + b'@example> SIZE=1234') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + + self.write_line(b'MAIL from:<' + + b'a' * (fill_len + 26) + + b'@example> SIZE=1234') + self.assertEqual(self.channel.socket.last, + b'500 Error: line too long\r\n') + + def test_MAIL_command_rejects_SMTPUTF8_by_default(self): + self.write_line(b'EHLO example') + self.write_line( + b'MAIL from: <naive@example.com> BODY=8BITMIME SMTPUTF8') + self.assertEqual(self.channel.socket.last[0:1], b'5') + + def test_data_longer_than_default_data_size_limit(self): + # Hack the default so we don't have to generate so much data. + self.channel.data_size_limit = 1048 + self.write_line(b'HELO example') + self.write_line(b'MAIL From:eggs@example') + self.write_line(b'RCPT To:spam@example') + self.write_line(b'DATA') + self.write_line(b'A' * self.channel.data_size_limit + + b'A\r\n.') + self.assertEqual(self.channel.socket.last, + b'552 Error: Too much mail data\r\n') + + def test_MAIL_size_parameter(self): + self.write_line(b'EHLO example') + self.write_line(b'MAIL FROM:<eggs@example> SIZE=512') + self.assertEqual(self.channel.socket.last, + b'250 OK\r\n') + + def test_MAIL_invalid_size_parameter(self): + self.write_line(b'EHLO example') + self.write_line(b'MAIL FROM:<eggs@example> SIZE=invalid') + self.assertEqual(self.channel.socket.last, + b'501 Syntax: MAIL FROM: <address> [SP <mail-parameters>]\r\n') + + def test_MAIL_RCPT_unknown_parameters(self): + self.write_line(b'EHLO example') + self.write_line(b'MAIL FROM:<eggs@example> ham=green') + self.assertEqual(self.channel.socket.last, + b'555 MAIL FROM parameters not recognized or not implemented\r\n') + + self.write_line(b'MAIL FROM:<eggs@example>') + self.write_line(b'RCPT TO:<eggs@example> ham=green') + self.assertEqual(self.channel.socket.last, + b'555 RCPT TO parameters not recognized or not implemented\r\n') + + def test_MAIL_size_parameter_larger_than_default_data_size_limit(self): + self.channel.data_size_limit = 1048 + self.write_line(b'EHLO example') + self.write_line(b'MAIL FROM:<eggs@example> SIZE=2096') + self.assertEqual(self.channel.socket.last, + b'552 Error: message size exceeds fixed maximum message size\r\n') + + def test_need_MAIL(self): + self.write_line(b'HELO example') + self.write_line(b'RCPT to:spam@example') + self.assertEqual(self.channel.socket.last, + b'503 Error: need MAIL command\r\n') + + def test_MAIL_syntax_HELO(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL from eggs@example') + self.assertEqual(self.channel.socket.last, + b'501 Syntax: MAIL FROM: <address>\r\n') + + def test_MAIL_syntax_EHLO(self): + self.write_line(b'EHLO example') + self.write_line(b'MAIL from eggs@example') + self.assertEqual(self.channel.socket.last, + b'501 Syntax: MAIL FROM: <address> [SP <mail-parameters>]\r\n') + + def test_MAIL_missing_address(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL from:') + self.assertEqual(self.channel.socket.last, + b'501 Syntax: MAIL FROM: <address>\r\n') + + def test_MAIL_chevrons(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL from:<eggs@example>') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + + def test_MAIL_empty_chevrons(self): + self.write_line(b'EHLO example') + self.write_line(b'MAIL from:<>') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + + def test_MAIL_quoted_localpart(self): + self.write_line(b'EHLO example') + self.write_line(b'MAIL from: <"Fred Blogs"@example.com>') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + self.assertEqual(self.channel.mailfrom, '"Fred Blogs"@example.com') + + def test_MAIL_quoted_localpart_no_angles(self): + self.write_line(b'EHLO example') + self.write_line(b'MAIL from: "Fred Blogs"@example.com') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + self.assertEqual(self.channel.mailfrom, '"Fred Blogs"@example.com') + + def test_MAIL_quoted_localpart_with_size(self): + self.write_line(b'EHLO example') + self.write_line(b'MAIL from: <"Fred Blogs"@example.com> SIZE=1000') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + self.assertEqual(self.channel.mailfrom, '"Fred Blogs"@example.com') + + def test_MAIL_quoted_localpart_with_size_no_angles(self): + self.write_line(b'EHLO example') + self.write_line(b'MAIL from: "Fred Blogs"@example.com SIZE=1000') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + self.assertEqual(self.channel.mailfrom, '"Fred Blogs"@example.com') + + def test_nested_MAIL(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL from:eggs@example') + self.write_line(b'MAIL from:spam@example') + self.assertEqual(self.channel.socket.last, + b'503 Error: nested MAIL command\r\n') + + def test_VRFY(self): + self.write_line(b'VRFY eggs@example') + self.assertEqual(self.channel.socket.last, + b'252 Cannot VRFY user, but will accept message and attempt ' + \ + b'delivery\r\n') + + def test_VRFY_syntax(self): + self.write_line(b'VRFY') + self.assertEqual(self.channel.socket.last, + b'501 Syntax: VRFY <address>\r\n') + + def test_EXPN_not_implemented(self): + self.write_line(b'EXPN') + self.assertEqual(self.channel.socket.last, + b'502 EXPN not implemented\r\n') + + def test_no_HELO_MAIL(self): + self.write_line(b'MAIL from:<foo@example.com>') + self.assertEqual(self.channel.socket.last, + b'503 Error: send HELO first\r\n') + + def test_need_RCPT(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL From:eggs@example') + self.write_line(b'DATA') + self.assertEqual(self.channel.socket.last, + b'503 Error: need RCPT command\r\n') + + def test_RCPT_syntax_HELO(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL From: eggs@example') + self.write_line(b'RCPT to eggs@example') + self.assertEqual(self.channel.socket.last, + b'501 Syntax: RCPT TO: <address>\r\n') + + def test_RCPT_syntax_EHLO(self): + self.write_line(b'EHLO example') + self.write_line(b'MAIL From: eggs@example') + self.write_line(b'RCPT to eggs@example') + self.assertEqual(self.channel.socket.last, + b'501 Syntax: RCPT TO: <address> [SP <mail-parameters>]\r\n') + + def test_RCPT_lowercase_to_OK(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL From: eggs@example') + self.write_line(b'RCPT to: <eggs@example>') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + + def test_no_HELO_RCPT(self): + self.write_line(b'RCPT to eggs@example') + self.assertEqual(self.channel.socket.last, + b'503 Error: send HELO first\r\n') + + def test_data_dialog(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL From:eggs@example') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + self.write_line(b'RCPT To:spam@example') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + + self.write_line(b'DATA') + self.assertEqual(self.channel.socket.last, + b'354 End data with <CR><LF>.<CR><LF>\r\n') + self.write_line(b'data\r\nmore\r\n.') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + self.assertEqual(self.server.messages, + [(('peer-address', 'peer-port'), + 'eggs@example', + ['spam@example'], + 'data\nmore')]) + + def test_DATA_syntax(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL From:eggs@example') + self.write_line(b'RCPT To:spam@example') + self.write_line(b'DATA spam') + self.assertEqual(self.channel.socket.last, b'501 Syntax: DATA\r\n') + + def test_no_HELO_DATA(self): + self.write_line(b'DATA spam') + self.assertEqual(self.channel.socket.last, + b'503 Error: send HELO first\r\n') + + def test_data_transparency_section_4_5_2(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL From:eggs@example') + self.write_line(b'RCPT To:spam@example') + self.write_line(b'DATA') + self.write_line(b'..\r\n.\r\n') + self.assertEqual(self.channel.received_data, '.') + + def test_multiple_RCPT(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL From:eggs@example') + self.write_line(b'RCPT To:spam@example') + self.write_line(b'RCPT To:ham@example') + self.write_line(b'DATA') + self.write_line(b'data\r\n.') + self.assertEqual(self.server.messages, + [(('peer-address', 'peer-port'), + 'eggs@example', + ['spam@example','ham@example'], + 'data')]) + + def test_manual_status(self): + # checks that the Channel is able to return a custom status message + self.write_line(b'HELO example') + self.write_line(b'MAIL From:eggs@example') + self.write_line(b'RCPT To:spam@example') + self.write_line(b'DATA') + self.write_line(b'return status\r\n.') + self.assertEqual(self.channel.socket.last, b'250 Okish\r\n') + + def test_RSET(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL From:eggs@example') + self.write_line(b'RCPT To:spam@example') + self.write_line(b'RSET') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + self.write_line(b'MAIL From:foo@example') + self.write_line(b'RCPT To:eggs@example') + self.write_line(b'DATA') + self.write_line(b'data\r\n.') + self.assertEqual(self.server.messages, + [(('peer-address', 'peer-port'), + 'foo@example', + ['eggs@example'], + 'data')]) + + def test_HELO_RSET(self): + self.write_line(b'HELO example') + self.write_line(b'RSET') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + + def test_RSET_syntax(self): + self.write_line(b'RSET hi') + self.assertEqual(self.channel.socket.last, b'501 Syntax: RSET\r\n') + + def test_unknown_command(self): + self.write_line(b'UNKNOWN_CMD') + self.assertEqual(self.channel.socket.last, + b'500 Error: command "UNKNOWN_CMD" not ' + \ + b'recognized\r\n') + + def test_attribute_deprecations(self): + with warnings_helper.check_warnings(('', DeprecationWarning)): + spam = self.channel._SMTPChannel__server + with warnings_helper.check_warnings(('', DeprecationWarning)): + self.channel._SMTPChannel__server = 'spam' + with warnings_helper.check_warnings(('', DeprecationWarning)): + spam = self.channel._SMTPChannel__line + with warnings_helper.check_warnings(('', DeprecationWarning)): + self.channel._SMTPChannel__line = 'spam' + with warnings_helper.check_warnings(('', DeprecationWarning)): + spam = self.channel._SMTPChannel__state + with warnings_helper.check_warnings(('', DeprecationWarning)): + self.channel._SMTPChannel__state = 'spam' + with warnings_helper.check_warnings(('', DeprecationWarning)): + spam = self.channel._SMTPChannel__greeting + with warnings_helper.check_warnings(('', DeprecationWarning)): + self.channel._SMTPChannel__greeting = 'spam' + with warnings_helper.check_warnings(('', DeprecationWarning)): + spam = self.channel._SMTPChannel__mailfrom + with warnings_helper.check_warnings(('', DeprecationWarning)): + self.channel._SMTPChannel__mailfrom = 'spam' + with warnings_helper.check_warnings(('', DeprecationWarning)): + spam = self.channel._SMTPChannel__rcpttos + with warnings_helper.check_warnings(('', DeprecationWarning)): + self.channel._SMTPChannel__rcpttos = 'spam' + with warnings_helper.check_warnings(('', DeprecationWarning)): + spam = self.channel._SMTPChannel__data + with warnings_helper.check_warnings(('', DeprecationWarning)): + self.channel._SMTPChannel__data = 'spam' + with warnings_helper.check_warnings(('', DeprecationWarning)): + spam = self.channel._SMTPChannel__fqdn + with warnings_helper.check_warnings(('', DeprecationWarning)): + self.channel._SMTPChannel__fqdn = 'spam' + with warnings_helper.check_warnings(('', DeprecationWarning)): + spam = self.channel._SMTPChannel__peer + with warnings_helper.check_warnings(('', DeprecationWarning)): + self.channel._SMTPChannel__peer = 'spam' + with warnings_helper.check_warnings(('', DeprecationWarning)): + spam = self.channel._SMTPChannel__conn + with warnings_helper.check_warnings(('', DeprecationWarning)): + self.channel._SMTPChannel__conn = 'spam' + with warnings_helper.check_warnings(('', DeprecationWarning)): + spam = self.channel._SMTPChannel__addr + with warnings_helper.check_warnings(('', DeprecationWarning)): + self.channel._SMTPChannel__addr = 'spam' + +@unittest.skipUnless(socket_helper.IPV6_ENABLED, "IPv6 not enabled") +class SMTPDChannelIPv6Test(SMTPDChannelTest): + def setUp(self): + smtpd.socket = asyncore.socket = mock_socket + self.old_debugstream = smtpd.DEBUGSTREAM + self.debug = smtpd.DEBUGSTREAM = io.StringIO() + self.server = DummyServer((socket_helper.HOSTv6, 0), ('b', 0), + decode_data=True) + conn, addr = self.server.accept() + self.channel = smtpd.SMTPChannel(self.server, conn, addr, + decode_data=True) + +class SMTPDChannelWithDataSizeLimitTest(unittest.TestCase): + + def setUp(self): + smtpd.socket = asyncore.socket = mock_socket + self.old_debugstream = smtpd.DEBUGSTREAM + self.debug = smtpd.DEBUGSTREAM = io.StringIO() + self.server = DummyServer((socket_helper.HOST, 0), ('b', 0), + decode_data=True) + conn, addr = self.server.accept() + # Set DATA size limit to 32 bytes for easy testing + self.channel = smtpd.SMTPChannel(self.server, conn, addr, 32, + decode_data=True) + + def tearDown(self): + asyncore.close_all() + asyncore.socket = smtpd.socket = socket + smtpd.DEBUGSTREAM = self.old_debugstream + + def write_line(self, line): + self.channel.socket.queue_recv(line) + self.channel.handle_read() + + def test_data_limit_dialog(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL From:eggs@example') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + self.write_line(b'RCPT To:spam@example') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + + self.write_line(b'DATA') + self.assertEqual(self.channel.socket.last, + b'354 End data with <CR><LF>.<CR><LF>\r\n') + self.write_line(b'data\r\nmore\r\n.') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + self.assertEqual(self.server.messages, + [(('peer-address', 'peer-port'), + 'eggs@example', + ['spam@example'], + 'data\nmore')]) + + def test_data_limit_dialog_too_much_data(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL From:eggs@example') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + self.write_line(b'RCPT To:spam@example') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + + self.write_line(b'DATA') + self.assertEqual(self.channel.socket.last, + b'354 End data with <CR><LF>.<CR><LF>\r\n') + self.write_line(b'This message is longer than 32 bytes\r\n.') + self.assertEqual(self.channel.socket.last, + b'552 Error: Too much mail data\r\n') + + +class SMTPDChannelWithDecodeDataFalse(unittest.TestCase): + + def setUp(self): + smtpd.socket = asyncore.socket = mock_socket + self.old_debugstream = smtpd.DEBUGSTREAM + self.debug = smtpd.DEBUGSTREAM = io.StringIO() + self.server = DummyServer((socket_helper.HOST, 0), ('b', 0)) + conn, addr = self.server.accept() + self.channel = smtpd.SMTPChannel(self.server, conn, addr) + + def tearDown(self): + asyncore.close_all() + asyncore.socket = smtpd.socket = socket + smtpd.DEBUGSTREAM = self.old_debugstream + + def write_line(self, line): + self.channel.socket.queue_recv(line) + self.channel.handle_read() + + def test_ascii_data(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL From:eggs@example') + self.write_line(b'RCPT To:spam@example') + self.write_line(b'DATA') + self.write_line(b'plain ascii text') + self.write_line(b'.') + self.assertEqual(self.channel.received_data, b'plain ascii text') + + def test_utf8_data(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL From:eggs@example') + self.write_line(b'RCPT To:spam@example') + self.write_line(b'DATA') + self.write_line(b'utf8 enriched text: \xc5\xbc\xc5\xba\xc4\x87') + self.write_line(b'and some plain ascii') + self.write_line(b'.') + self.assertEqual( + self.channel.received_data, + b'utf8 enriched text: \xc5\xbc\xc5\xba\xc4\x87\n' + b'and some plain ascii') + + +class SMTPDChannelWithDecodeDataTrue(unittest.TestCase): + + def setUp(self): + smtpd.socket = asyncore.socket = mock_socket + self.old_debugstream = smtpd.DEBUGSTREAM + self.debug = smtpd.DEBUGSTREAM = io.StringIO() + self.server = DummyServer((socket_helper.HOST, 0), ('b', 0), + decode_data=True) + conn, addr = self.server.accept() + # Set decode_data to True + self.channel = smtpd.SMTPChannel(self.server, conn, addr, + decode_data=True) + + def tearDown(self): + asyncore.close_all() + asyncore.socket = smtpd.socket = socket + smtpd.DEBUGSTREAM = self.old_debugstream + + def write_line(self, line): + self.channel.socket.queue_recv(line) + self.channel.handle_read() + + def test_ascii_data(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL From:eggs@example') + self.write_line(b'RCPT To:spam@example') + self.write_line(b'DATA') + self.write_line(b'plain ascii text') + self.write_line(b'.') + self.assertEqual(self.channel.received_data, 'plain ascii text') + + def test_utf8_data(self): + self.write_line(b'HELO example') + self.write_line(b'MAIL From:eggs@example') + self.write_line(b'RCPT To:spam@example') + self.write_line(b'DATA') + self.write_line(b'utf8 enriched text: \xc5\xbc\xc5\xba\xc4\x87') + self.write_line(b'and some plain ascii') + self.write_line(b'.') + self.assertEqual( + self.channel.received_data, + 'utf8 enriched text: żźć\nand some plain ascii') + + +class SMTPDChannelTestWithEnableSMTPUTF8True(unittest.TestCase): + def setUp(self): + smtpd.socket = asyncore.socket = mock_socket + self.old_debugstream = smtpd.DEBUGSTREAM + self.debug = smtpd.DEBUGSTREAM = io.StringIO() + self.server = DummyServer((socket_helper.HOST, 0), ('b', 0), + enable_SMTPUTF8=True) + conn, addr = self.server.accept() + self.channel = smtpd.SMTPChannel(self.server, conn, addr, + enable_SMTPUTF8=True) + + def tearDown(self): + asyncore.close_all() + asyncore.socket = smtpd.socket = socket + smtpd.DEBUGSTREAM = self.old_debugstream + + def write_line(self, line): + self.channel.socket.queue_recv(line) + self.channel.handle_read() + + def test_MAIL_command_accepts_SMTPUTF8_when_announced(self): + self.write_line(b'EHLO example') + self.write_line( + 'MAIL from: <naïve@example.com> BODY=8BITMIME SMTPUTF8'.encode( + 'utf-8') + ) + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + + def test_process_smtputf8_message(self): + self.write_line(b'EHLO example') + for mail_parameters in [b'', b'BODY=8BITMIME SMTPUTF8']: + self.write_line(b'MAIL from: <a@example> ' + mail_parameters) + self.assertEqual(self.channel.socket.last[0:3], b'250') + self.write_line(b'rcpt to:<b@example.com>') + self.assertEqual(self.channel.socket.last[0:3], b'250') + self.write_line(b'data') + self.assertEqual(self.channel.socket.last[0:3], b'354') + self.write_line(b'c\r\n.') + if mail_parameters == b'': + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + else: + self.assertEqual(self.channel.socket.last, + b'250 SMTPUTF8 message okish\r\n') + + def test_utf8_data(self): + self.write_line(b'EHLO example') + self.write_line( + 'MAIL From: naïve@examplé BODY=8BITMIME SMTPUTF8'.encode('utf-8')) + self.assertEqual(self.channel.socket.last[0:3], b'250') + self.write_line('RCPT To:späm@examplé'.encode('utf-8')) + self.assertEqual(self.channel.socket.last[0:3], b'250') + self.write_line(b'DATA') + self.assertEqual(self.channel.socket.last[0:3], b'354') + self.write_line(b'utf8 enriched text: \xc5\xbc\xc5\xba\xc4\x87') + self.write_line(b'.') + self.assertEqual( + self.channel.received_data, + b'utf8 enriched text: \xc5\xbc\xc5\xba\xc4\x87') + + def test_MAIL_command_limit_extended_with_SIZE_and_SMTPUTF8(self): + self.write_line(b'ehlo example') + fill_len = (512 + 26 + 10) - len('mail from:<@example>') + self.write_line(b'MAIL from:<' + + b'a' * (fill_len + 1) + + b'@example>') + self.assertEqual(self.channel.socket.last, + b'500 Error: line too long\r\n') + self.write_line(b'MAIL from:<' + + b'a' * fill_len + + b'@example>') + self.assertEqual(self.channel.socket.last, b'250 OK\r\n') + + def test_multiple_emails_with_extended_command_length(self): + self.write_line(b'ehlo example') + fill_len = (512 + 26 + 10) - len('mail from:<@example>') + for char in [b'a', b'b', b'c']: + self.write_line(b'MAIL from:<' + char * fill_len + b'a@example>') + self.assertEqual(self.channel.socket.last[0:3], b'500') + self.write_line(b'MAIL from:<' + char * fill_len + b'@example>') + self.assertEqual(self.channel.socket.last[0:3], b'250') + self.write_line(b'rcpt to:<hans@example.com>') + self.assertEqual(self.channel.socket.last[0:3], b'250') + self.write_line(b'data') + self.assertEqual(self.channel.socket.last[0:3], b'354') + self.write_line(b'test\r\n.') + self.assertEqual(self.channel.socket.last[0:3], b'250') + + +class MiscTestCase(unittest.TestCase): + def test__all__(self): + not_exported = { + "program", "Devnull", "DEBUGSTREAM", "NEWLINE", "COMMASPACE", + "DATA_SIZE_DEFAULT", "usage", "Options", "parseargs", + } + support.check__all__(self, smtpd, not_exported=not_exported) + + +if __name__ == "__main__": + unittest.main() |