1 files changed, 130 insertions, 0 deletions
diff --git a/mailman/tests/smtplistener.py b/mailman/tests/smtplistener.py
new file mode 100644
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+++ b/mailman/tests/smtplistener.py
@@ -0,0 +1,130 @@
+# Copyright (C) 2007-2008 by the Free Software Foundation, Inc.
+#
+# This program 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 2
+# of the License, or (at your option) any later version.
+#
+# This program 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 this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+# USA.
+
+"""A test SMTP listener."""
+
+import sys
+import smtpd
+import signal
+import mailbox
+import asyncore
+import optparse
+
+from email import message_from_string
+
+COMMASPACE = ', '
+DEFAULT_PORT = 9025
+
+
+
+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_RSET(self, arg):
+        """Respond to RSET and clear the mailbox."""
+        self._server.clear_mailbox()
+        smtpd.SMTPChannel.smtp_RSET(self, arg)
+
+    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, mailbox_path):
+        smtpd.SMTPServer.__init__(self, localaddr, None)
+        self._mailbox = mailbox.Maildir(mailbox_path)
+
+    def handle_accept(self):
+        """Handle connections by creating our own Channel object."""
+        conn, addr = self.accept()
+        Channel(self, conn, addr)
+
+    def process_message(self, peer, mailfrom, rcpttos, data):
+        """Process a message by adding it to the mailbox."""
+        msg = message_from_string(data)
+        msg['X-Peer'] = peer
+        msg['X-MailFrom'] = mailfrom
+        msg['X-RcptTo'] = COMMASPACE.join(rcpttos)
+        self._mailbox.add(msg)
+        self._mailbox.clean()
+
+
+
+def handle_signal(*ignore):
+    """Handle signal sent by parent to kill the process."""
+    asyncore.socket_map.clear()
+
+
+
+def main():
+    parser = optparse.OptionParser(usage="""\
+%prog [options] mboxfile
+
+This starts a process listening on a specified host and port (by default
+localhost:9025) for SMTP conversations.  All messages this process receives
+are stored in a specified mbox file for the parent process to investigate.
+
+This SMTP server responds to RSET commands by clearing the mbox file.
+""")
+    parser.add_option('-a', '--address',
+                      type='string', default=None,
+                      help='host:port to listen on')
+    opts, args = parser.parse_args()
+    if len(args) == 0:
+        parser.error('Missing mbox file')
+    elif len(args) > 1:
+        parser.error('Unexpected arguments')
+
+    mboxfile = args[0]
+    if opts.address is None:
+        host = 'localhost'
+        port = DEFAULT_PORT
+    elif ':' not in opts.address:
+        host = opts.address
+        port = DEFAULT_PORT
+    else:
+        host, port = opts.address.split(':', 1)
+        port = int(port)
+
+    # Catch the parent's exit signal, and also C-c.
+    signal.signal(signal.SIGTERM, handle_signal)
+    signal.signal(signal.SIGINT, handle_signal)
+
+    server = Server((host, port), mboxfile)
+    asyncore.loop()
+    asyncore.close_all()
+    server.close()
+    return 0
+
+
+
+if __name__ == '__main__':
+    sys.exit(main())