1 files changed, 291 insertions, 0 deletions
diff --git a/Lib/test/test_smtpd.py b/Lib/test/test_smtpd.py
new file mode 100644
index 00000000000..68ccc29036a
--- /dev/null
+++ b/Lib/test/test_smtpd.py
@@ -0,0 +1,291 @@
+from unittest import TestCase
+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(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'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(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_not_implemented(self):
+        self.write_line(b'EHLO test.example')
+        self.assertEqual(self.channel.socket.last,
+                         b'502 Error: command "EHLO" not implemented\r\n')
+
+    def test_HELO(self):
+        name = smtpd.socket.getfqdn()
+        self.write_line(b'HELO test.example')
+        self.assertEqual(self.channel.socket.last,
+                         '250 {}\r\n'.format(name).encode('ascii'))
+
+    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.assertEqual(self.channel.socket.last,
+                         b'503 Duplicate HELO/EHLO\r\n')
+
+    def test_NOOP(self):
+        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_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.assertEqual(self.channel.socket.last,
+                         b'451 Internal confusion\r\n')
+
+    def test_command_too_long(self):
+        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
+        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_need_MAIL(self):
+        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):
+        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_missing_from(self):
+        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'MAIL from:<eggs@example>')
+        self.assertEqual(self.channel.socket.last, b'250 Ok\r\n')
+
+    def test_nested_MAIL(self):
+        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_need_RCPT(self):
+        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')
+        self.write_line(b'RCPT to eggs@example')
+        self.assertEqual(self.channel.socket.last,
+            b'501 Syntax: RCPT TO: <address>\r\n')
+
+    def test_data_dialog(self):
+        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'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_data_transparency_section_4_5_2(self):
+        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'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'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'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_RSET_syntax(self):
+        self.write_line(b'RSET hi')
+        self.assertEqual(self.channel.socket.last, b'501 Syntax: RSET\r\n')
+
+    def test_attribute_deprecations(self):
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            spam = self.channel._SMTPChannel__server
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            self.channel._SMTPChannel__server = 'spam'
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            spam = self.channel._SMTPChannel__line
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            self.channel._SMTPChannel__line = 'spam'
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            spam = self.channel._SMTPChannel__state
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            self.channel._SMTPChannel__state = 'spam'
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            spam = self.channel._SMTPChannel__greeting
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            self.channel._SMTPChannel__greeting = 'spam'
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            spam = self.channel._SMTPChannel__mailfrom
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            self.channel._SMTPChannel__mailfrom = 'spam'
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            spam = self.channel._SMTPChannel__rcpttos
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            self.channel._SMTPChannel__rcpttos = 'spam'
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            spam = self.channel._SMTPChannel__data
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            self.channel._SMTPChannel__data = 'spam'
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            spam = self.channel._SMTPChannel__fqdn
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            self.channel._SMTPChannel__fqdn = 'spam'
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            spam = self.channel._SMTPChannel__peer
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            self.channel._SMTPChannel__peer = 'spam'
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            spam = self.channel._SMTPChannel__conn
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            self.channel._SMTPChannel__conn = 'spam'
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            spam = self.channel._SMTPChannel__addr
+        with support.check_warnings(('', PendingDeprecationWarning)):
+            self.channel._SMTPChannel__addr = 'spam'
+
+def test_main():
+    support.run_unittest(SMTPDServerTest, SMTPDChannelTest)
+
+if __name__ == "__main__":
+    test_main()