def load_config(self):
self._config = load_config(self.options.config or 'vsmtpd.cfg', {
'vsmtpd': {
'port': 25,
'interface': None,
'backlog': 50,
'workers': 0,
'size_limit': 0,
'helo_host': None,
'connection_limit': 100,
'spool_dir': '/var/spool/vsmtpd',
'keyfile': None,
'certfile': None,
'cert_reqs': None,
# FIXME: Provide a default secure (SSLV3/TLSV1) cipher setup
'ssl_version': None,
'ca_certs': None,
'suppress_ragged_eofs': None,
'do_handshake_on_connect': None,
# FIXME: Provide a default secure (SSLV3/TLSV1) cipher setup
'ciphers': None,
'plugin_path': '/usr/share/vsmtpd/plugins'
}
})
self.config = ConfigWrapper(self._config, 'vsmtpd')
def test_config_wrapper(self):
path = os.path.join(os.path.dirname(__file__), 'test_config.cfg')
config = ConfigWrapper(load_config(path), 'vsmtpd')
self.assertEqual(config.get('helo_host'), 'smtp.example.com')
self.assertEqual(config.getint('port'), 25)
self.assertEqual(config.getfloat('float'), 3.123)
self.assertEqual(config.getboolean('ssl'), True)
self.assertTrue(config.has_option('backlog'))
items = [
('port', '25'),
('workers', '4'),
('backlog', '250'),
('helo_host', 'smtp.example.com'),
('ssl', 'true'),
('float', '3.123')
]
options = [i[0] for i in items]
self.assertEqual(config.items(), items)
self.assertEqual(config.options(), options)
self.assertTrue('port' in config)
config.set('backlog', '150')
self.assertEqual(config.getint('backlog'), 150)
class Vsmtpd(object):
def __init__(self, options, args):
self.options = options
self.args = args
self.pool = None
self.workers = []
# Load the configuration for the server
self.load_config()
# If we positive connection limit create a Pool with that limit
connection_limit = self.config.getint('connection_limit')
if connection_limit > 0:
self.pool = Pool(connection_limit)
log.info('Limiting connections to %d', connection_limit)
# Create the hook manager
self.hook_manager = HookManager()
# Create the plugin manager
plugin_path = self.config.get('plugin_path').split(':')
self.plugin_manager = PluginManager(plugin_path)
def fire(self, hook_name, *args, **kwargs):
return self.hook_manager.dispatch_hook(hook_name, *args, **kwargs)
def handle(self, socket, address):
connection = Connection(self, socket, address)
connection.run_hooks('pre_connection', connection)
connection.accept()
connection.run_hooks('post_connection', connection)
def load_config(self):
self._config = load_config(self.options.config or 'vsmtpd.cfg', {
'vsmtpd': {
'port': 25,
'interface': None,
'backlog': 50,
'workers': 0,
'size_limit': 0,
'helo_host': None,
'connection_limit': 100,
'spool_dir': '/var/spool/vsmtpd',
'keyfile': None,
'certfile': None,
'cert_reqs': None,
# FIXME: Provide a default secure (SSLV3/TLSV1) cipher setup
'ssl_version': None,
'ca_certs': None,
'suppress_ragged_eofs': None,
'do_handshake_on_connect': None,
# FIXME: Provide a default secure (SSLV3/TLSV1) cipher setup
'ciphers': None,
'plugin_path': '/usr/share/vsmtpd/plugins'
}
})
self.config = ConfigWrapper(self._config, 'vsmtpd')
def load_plugins(self):
log.info('Loading plugins...')
# Load the plugins
for section in self._config.sections():
if not section.startswith('plugin:'):
continue
plugin_name = section.split(':', 1)[1]
try:
plugin_cls = self.plugin_manager.load(plugin_name)
except Exception as e:
log.fatal("Failed to load plugin '%s'", plugin_name)
log.exception(e)
exit(1)
try:
if self._config.options(section):
plugin = plugin_cls(ConfigWrapper(self._config, section))
else:
plugin = plugin_cls()
plugin.plugin_name = plugin_name
except Exception as e:
log.fatal("Failed to initialise plugin '%s'", plugin_name)
log.exception(e)
exit(1)
self.hook_manager.register_object(plugin)
def reload(self):
"""
Reload the configuration.
"""
def start(self):
"""
Starts the vsmtpd server in either master or worker mode.
"""
# Install the signal handlers
signal.signal(signal.SIGTERM, self.stop)
signal.signal(signal.SIGHUP, self.reload)
signal.signal(signal.SIGINT, self.stop)
workers = self.config.getint('workers')
backlog = self.config.getint('backlog')
addr = ('0.0.0.0', 2500)
if backlog < 1:
backlog = 50
log.info('Starting server on %s port %d', *addr)
if workers <= 0:
set_cmdline('vsmtpd: master')
self._start(addr, backlog)
# Open the socket for master/worker operation.
self.sock = socket.socket()
self.sock.bind(addr)
self.sock.listen(backlog)
self.sock.setblocking(0)
# Spawn the worker servers
for i in xrange(0, workers):
self._start_slave()
# Set the process title
set_cmdline('vsmtpd: master')
# Wait for the children to die
try:
os.waitpid(-1, 0)
except OSError:
pass
def _start(self, listener, backlog=None):
"""
Starts the vsmtpd server.
"""
self.server = StreamServer(listener, self.handle, backlog=backlog,
spawn=self.pool)
self.server.serve_forever()
def _start_slave(self):
"""
Starts a new slave worker process.
"""
pid = os.fork()
if pid == 0:
# Set up the command line and logger id
set_cmdline('vsmtpd: worker')
log.connection_id = 'worker'
# Call event_reinit()
gevent.reinit()
# Start vsmtpd
self._start(self.sock)
else:
log.info('Worker spawned PID %d', pid)
self.workers.append(pid)
def stop(self, *args):
"""
Shuts down the vsmtpd server and any workers running.
"""
# Shut down the server or the socket, depending on which is running
if self.workers:
self.sock.shutdown(socket.SHUT_RDWR)
self.sock.close()
for pid in self.workers:
os.kill(pid, signal.SIGTERM)
else:
self.server.stop()
# Finally exit successfully
sys.exit()