1 files changed, 122 insertions, 0 deletions
diff --git a/mailman/mta/postfix.py b/mailman/mta/postfix.py
new file mode 100644
index 000000000..4b92d5789
--- /dev/null
+++ b/mailman/mta/postfix.py
@@ -0,0 +1,122 @@
+# Copyright (C) 2001-2009 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/>.
+
+"""Creation/deletion hooks for the Postfix MTA."""
+
+__metaclass__ = type
+__all__ = [
+    'LMTP',
+    ]
+
+
+import os
+import grp
+import pwd
+import time
+import errno
+import logging
+import datetime
+
+from locknix.lockfile import Lock
+from zope.interface import implements
+
+from mailman import Defaults
+from mailman import Utils
+from mailman.config import config
+from mailman.interfaces.mta import IMailTransportAgent
+from mailman.i18n import _
+
+log = logging.getLogger('mailman.error')
+
+LOCKFILE = os.path.join(config.LOCK_DIR, 'mta')
+SUBDESTINATIONS = (
+    'bounces',  'confirm',  'join',         'leave',
+    'owner',    'request',  'subscribe',    'unsubscribe',
+    )
+
+
+
+class LMTP:
+    """Connect Mailman to Postfix via LMTP."""
+
+    implements(IMailTransportAgent)
+
+    def create(self, mlist):
+        """See `IMailTransportAgent`."""
+        # Acquire a lock file to prevent other processes from racing us here.
+        with Lock(LOCKFILE):
+            # We can ignore the mlist argument because for LMTP delivery, we
+            # just generate the entire file every time.
+            self._do_write_file()
+
+    delete = create
+
+    def regenerate(self):
+        """See `IMailTransportAgent`."""
+        # Acquire a lock file to prevent other processes from racing us here.
+        with Lock(LOCKFILE):
+            self._do_write_file()
+
+    def _do_write_file(self):
+        """Do the actual file writes for list creation."""
+        # Open up the new alias text file.
+        path = os.path.join(config.DATA_DIR, 'postfix_lmtp')
+        # Sort all existing mailing list names first by domain, then my local
+        # part.  For postfix we need a dummy entry for the domain.
+        by_domain = {}
+        for mailing_list in config.db.list_manager.mailing_lists:
+            by_domain.setdefault(mailing_list.host_name, []).append(
+                mailing_list.list_name)
+        with open(path + '.new', 'w') as fp:
+            print >> fp, """\
+# AUTOMATICALLY GENERATED BY MAILMAN ON {0}
+#
+# This file is generated by Mailman, and is kept in sync with the binary hash
+# file.  YOU SHOULD NOT MANUALLY EDIT THIS FILE unless you know what you're
+# doing, and can keep the two files properly in sync.  If you screw it up,
+# you're on your own.
+""".format(datetime.datetime.now().replace(microsecond=0))
+            for domain in sorted(by_domain):
+                print >> fp, """\
+# Aliases which are visible only in the @{0} domain.
+""".format(domain)
+                for list_name in by_domain[domain]:
+                    # Calculate the field width of the longest alias.  10 ==
+                    # len('-subscribe') + '@'.
+                    longest = len(list_name + domain) + 10
+                    print >> fp, """\
+{0}@{1:{3}}lmtp:{2.mta.lmtp_host}:{2.mta.lmtp_port}""".format(
+                        list_name, domain, config,
+                        # Add 1 because the bare list name has no dash.
+                        longest + 1)
+                    for destination in SUBDESTINATIONS:
+                        print >> fp, """\
+{0}-{1}@{2:{4}}lmtp:{3.mta.lmtp_host}:{3.mta.lmtp_port}""".format(
+                        list_name, destination, domain, config,
+                        longest - len(destination))
+                print >> fp
+        # Move the temporary file into place, then generate the new .db file.
+        os.rename(path + '.new', path)
+        # Now that the new aliases file has been written, we must tell Postfix
+        # to generate a new .db file.
+        command = Defaults.POSTFIX_MAP_CMD + ' ' + path
+        status = (os.system(command) >> 8) & 0xff
+        if status:
+            msg = 'command failure: %s, %s, %s'
+            errstr = os.strerror(status)
+            log.error(msg, command, status, errstr)
+            raise RuntimeError(msg % (command, status, errstr))