| import unittest |
| from test import support, mock_socket |
| import socket |
| import io |
| import smtpd |
| import asyncore |
| |
| |
| class DummyServer(smtpd.SMTPServer): |
| def __init__(self, localaddr, remoteaddr): |
| smtpd.SMTPServer.__init__(self, localaddr, remoteaddr) |
| self.messages = [] |
| |
| def process_message(self, peer, mailfrom, rcpttos, data): |
| self.messages.append((peer, mailfrom, rcpttos, data)) |
| if data == 'return status': |
| return '250 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('a', 'b') |
| conn, addr = server.accept() |
| channel = smtpd.SMTPChannel(server, conn, addr) |
| |
| 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 tearDown(self): |
| asyncore.close_all() |
| asyncore.socket = smtpd.socket = socket |
| |
| |
| 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('a', 'b') |
| 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_broken_connect(self): |
| self.assertRaises(DummyDispatcherBroken, BrokenDummyServer, 'a', 'b') |
| |
| 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_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', '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', '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', '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 support.check_warnings(('', DeprecationWarning)): |
| spam = self.channel._SMTPChannel__server |
| with support.check_warnings(('', DeprecationWarning)): |
| self.channel._SMTPChannel__server = 'spam' |
| with support.check_warnings(('', DeprecationWarning)): |
| spam = self.channel._SMTPChannel__line |
| with support.check_warnings(('', DeprecationWarning)): |
| self.channel._SMTPChannel__line = 'spam' |
| with support.check_warnings(('', DeprecationWarning)): |
| spam = self.channel._SMTPChannel__state |
| with support.check_warnings(('', DeprecationWarning)): |
| self.channel._SMTPChannel__state = 'spam' |
| with support.check_warnings(('', DeprecationWarning)): |
| spam = self.channel._SMTPChannel__greeting |
| with support.check_warnings(('', DeprecationWarning)): |
| self.channel._SMTPChannel__greeting = 'spam' |
| with support.check_warnings(('', DeprecationWarning)): |
| spam = self.channel._SMTPChannel__mailfrom |
| with support.check_warnings(('', DeprecationWarning)): |
| self.channel._SMTPChannel__mailfrom = 'spam' |
| with support.check_warnings(('', DeprecationWarning)): |
| spam = self.channel._SMTPChannel__rcpttos |
| with support.check_warnings(('', DeprecationWarning)): |
| self.channel._SMTPChannel__rcpttos = 'spam' |
| with support.check_warnings(('', DeprecationWarning)): |
| spam = self.channel._SMTPChannel__data |
| with support.check_warnings(('', DeprecationWarning)): |
| self.channel._SMTPChannel__data = 'spam' |
| with support.check_warnings(('', DeprecationWarning)): |
| spam = self.channel._SMTPChannel__fqdn |
| with support.check_warnings(('', DeprecationWarning)): |
| self.channel._SMTPChannel__fqdn = 'spam' |
| with support.check_warnings(('', DeprecationWarning)): |
| spam = self.channel._SMTPChannel__peer |
| with support.check_warnings(('', DeprecationWarning)): |
| self.channel._SMTPChannel__peer = 'spam' |
| with support.check_warnings(('', DeprecationWarning)): |
| spam = self.channel._SMTPChannel__conn |
| with support.check_warnings(('', DeprecationWarning)): |
| self.channel._SMTPChannel__conn = 'spam' |
| with support.check_warnings(('', DeprecationWarning)): |
| spam = self.channel._SMTPChannel__addr |
| with support.check_warnings(('', DeprecationWarning)): |
| self.channel._SMTPChannel__addr = 'spam' |
| |
| |
| 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('a', 'b') |
| conn, addr = self.server.accept() |
| # Set DATA size limit to 32 bytes for easy testing |
| self.channel = smtpd.SMTPChannel(self.server, conn, addr, 32) |
| |
| 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', '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') |
| |
| |
| if __name__ == "__main__": |
| unittest.main() |