1 files changed, 97 insertions, 0 deletions
diff --git a/src/mailman/testing/smtplistener.py b/src/mailman/testing/smtplistener.py
new file mode 100644
index 000000000..2094e20de
--- /dev/null
+++ b/src/mailman/testing/smtplistener.py
@@ -0,0 +1,97 @@
+# Copyright (C) 2007-2009 by the Free Software Foundation, Inc.
+#
+# This file is part of GNU Mailman.
+#
+# GNU Mailman is free software: you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free
+# Software Foundation, either version 3 of the License, or (at your option)
+# any later version.
+#
+# GNU Mailman is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# GNU Mailman.  If not, see <http://www.gnu.org/licenses/>.
+
+"""A test SMTP listener."""
+
+from __future__ import absolute_import, unicode_literals
+
+__metaclass__ = type
+__all__ = [
+    'Server',
+    ]
+
+
+import smtpd
+import socket
+import logging
+import asyncore
+
+from email import message_from_string
+
+
+COMMASPACE = ', '
+log = logging.getLogger('mailman.debug')
+
+
+
+class Channel(smtpd.SMTPChannel):
+    """A channel that can reset the mailbox."""
+
+    def __init__(self, server, conn, addr):
+        smtpd.SMTPChannel.__init__(self, server, conn, addr)
+        # Stash this here since the subclass uses private attributes. :(
+        self._server = server
+
+    def smtp_EXIT(self, arg):
+        """Respond to a new command EXIT by exiting the server."""
+        self.push('250 Ok')
+        self._server.stop()
+
+    def send(self, data):
+        """Silence the bloody asynchat/asyncore broken pipe errors!"""
+        try:
+            return smtpd.SMTPChannel.send(self, data)
+        except socket.error:
+            # Nothing here can affect the outcome, and these messages are just
+            # plain annoying!  So ignore them.
+            pass
+
+
+
+class Server(smtpd.SMTPServer):
+    """An SMTP server that stores messages to a mailbox."""
+
+    def __init__(self, localaddr, queue):
+        smtpd.SMTPServer.__init__(self, localaddr, None)
+        log.info('[SMTPServer] listening: %s', localaddr)
+        self._queue = queue
+
+    def handle_accept(self):
+        """Handle connections by creating our own Channel object."""
+        conn, addr = self.accept()
+        log.info('[SMTPServer] accepted: %s', addr)
+        Channel(self, conn, addr)
+
+    def process_message(self, peer, mailfrom, rcpttos, data):
+        """Process a message by adding it to the mailbox."""
+        message = message_from_string(data)
+        message['X-Peer'] = '{0}:{1}'.format(*peer)
+        message['X-MailFrom'] = mailfrom
+        message['X-RcptTo'] = COMMASPACE.join(rcpttos)
+        log.info('[SMTPServer] processed message: %s',
+                 message.get('message-id', 'n/a'))
+        self._queue.put(message)
+
+    def start(self):
+        """Start the asyncore loop."""
+        asyncore.loop()
+
+    def stop(self):
+        """Stop the asyncore loop."""
+        asyncore.socket_map.clear()
+        asyncore.close_all()
+        self.close()