diff options
Diffstat (limited to 'Lib/test/test_smtpd.py')
| -rw-r--r-- | Lib/test/test_smtpd.py | 368 |
1 files changed, 317 insertions, 51 deletions
diff --git a/Lib/test/test_smtpd.py b/Lib/test/test_smtpd.py index 68ccc29..93f14c4 100644 --- a/Lib/test/test_smtpd.py +++ b/Lib/test/test_smtpd.py @@ -1,4 +1,4 @@ -from unittest import TestCase +import unittest from test import support, mock_socket import socket import io @@ -26,7 +26,7 @@ class BrokenDummyServer(DummyServer): raise DummyDispatcherBroken() -class SMTPDServerTest(TestCase): +class SMTPDServerTest(unittest.TestCase): def setUp(self): smtpd.socket = asyncore.socket = mock_socket @@ -39,6 +39,7 @@ class SMTPDServerTest(TestCase): 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') @@ -49,7 +50,7 @@ class SMTPDServerTest(TestCase): asyncore.socket = smtpd.socket = socket -class SMTPDChannelTest(TestCase): +class SMTPDChannelTest(unittest.TestCase): def setUp(self): smtpd.socket = asyncore.socket = mock_socket self.old_debugstream = smtpd.DEBUGSTREAM @@ -78,31 +79,94 @@ class SMTPDChannelTest(TestCase): self.assertEqual(self.channel.socket.last, b'500 Error: bad syntax\r\n') - def test_EHLO_not_implemented(self): - self.write_line(b'EHLO test.example') + 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'502 Error: command "EHLO" not implemented\r\n') + 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 test.example') + 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 test.example') - self.write_line(b'HELO test.example') + 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') + 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') @@ -113,26 +177,47 @@ class SMTPDChannelTest(TestCase): 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') + 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'MAIL from ' + + 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_data_too_long(self): - # Small hack. Setting limit to 2K octets here will save us some time. - self.channel.data_size_limit = 2048 + 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') @@ -141,64 +226,183 @@ class SMTPDChannelTest(TestCase): 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(self): + 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') + b'501 Syntax: MAIL FROM: <address>\r\n') - def test_MAIL_missing_from(self): + 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') + 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') + 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(self): - self.write_line(b'MAIL From:eggs@example') + 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.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.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.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') @@ -206,6 +410,7 @@ class SMTPDChannelTest(TestCase): 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') @@ -216,6 +421,7 @@ class SMTPDChannelTest(TestCase): 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') @@ -223,10 +429,11 @@ class SMTPDChannelTest(TestCase): 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.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') @@ -234,58 +441,117 @@ class SMTPDChannelTest(TestCase): 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(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): spam = self.channel._SMTPChannel__server - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): self.channel._SMTPChannel__server = 'spam' - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): spam = self.channel._SMTPChannel__line - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): self.channel._SMTPChannel__line = 'spam' - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): spam = self.channel._SMTPChannel__state - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): self.channel._SMTPChannel__state = 'spam' - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): spam = self.channel._SMTPChannel__greeting - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): self.channel._SMTPChannel__greeting = 'spam' - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): spam = self.channel._SMTPChannel__mailfrom - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): self.channel._SMTPChannel__mailfrom = 'spam' - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): spam = self.channel._SMTPChannel__rcpttos - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): self.channel._SMTPChannel__rcpttos = 'spam' - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): spam = self.channel._SMTPChannel__data - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): self.channel._SMTPChannel__data = 'spam' - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): spam = self.channel._SMTPChannel__fqdn - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): self.channel._SMTPChannel__fqdn = 'spam' - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): spam = self.channel._SMTPChannel__peer - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): self.channel._SMTPChannel__peer = 'spam' - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): spam = self.channel._SMTPChannel__conn - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): self.channel._SMTPChannel__conn = 'spam' - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): spam = self.channel._SMTPChannel__addr - with support.check_warnings(('', PendingDeprecationWarning)): + with support.check_warnings(('', DeprecationWarning)): self.channel._SMTPChannel__addr = 'spam' -def test_main(): - support.run_unittest(SMTPDServerTest, SMTPDChannelTest) + +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__": - test_main() + unittest.main() |