def __do_send(self):
while True:
data = self.__send_buffer.get_data(self.__send_marker)
if data is None:
# send complete; clear the internal buffer for next possible
# send.
logger.debug(logger.DBGLVL_TRACE_DETAIL,
PYSERVER_COMMON_DNS_TCP_SEND_DONE,
ClientFormatter(self.__remote_addr),
self.__send_marker)
self.__send_buffer = None
self.__send_marker = 0
return self.SEND_DONE
try:
cc = self.__sock.send(data)
except socket.error as ex:
total_len = self.__send_buffer.get_total_len()
if ex.errno == errno.EAGAIN:
logger.debug(logger.DBGLVL_TRACE_DETAIL,
PYSERVER_COMMON_DNS_TCP_SEND_PENDING,
ClientFormatter(self.__remote_addr),
self.__send_marker, total_len)
return self.SENDING
logger.warn(PYSERVER_COMMON_DNS_TCP_SEND_ERROR,
ClientFormatter(self.__remote_addr),
self.__send_marker, total_len, ex)
self.__sock.close()
self.__sock = None
return self.CLOSED
self.__send_marker += cc
def deinit(self):
"""
Unregister from getting updates. The object will not be
usable any more after this.
"""
logger.debug(logger.DBGLVL_TRACE_BASIC,
PYSERVER_COMMON_TSIG_KEYRING_DEINIT)
self.__session.remove_remote_config('tsig_keys')
def _command_handler(self, cmd, args):
logger.debug(logger.DBGLVL_TRACE_BASIC, PYSERVER_COMMON_COMMAND,
self.__module_name, cmd)
if cmd == 'shutdown':
self._trigger_shutdown()
answer = isc.config.create_answer(0)
else:
answer = self._mod_command_handler(cmd, args)
return answer
def __init__(self, session):
"""
Constructor. Pass the ccsession object so the key ring can be
downloaded.
"""
logger.debug(logger.DBGLVL_TRACE_BASIC,
PYSERVER_COMMON_TSIG_KEYRING_INIT)
self.__session = session
self.__keyring = isc.dns.TSIGKeyRing()
session.add_remote_config_by_name('tsig_keys', self.__update)
self.__update()
def __update(self, value=None, module_cfg=None):
"""
Update the key ring by the configuration.
Note that this function is used as a callback, but can raise
on bad data. The bad data is expected to be handled by the
configuration plugin and not be allowed as far as here.
The parameters are there just to match the signature which
the callback should have (i.e. they are ignored).
"""
logger.debug(logger.DBGLVL_TRACE_BASIC,
PYSERVER_COMMON_TSIG_KEYRING_UPDATE)
(data, _) = self.__session.get_remote_config_value('tsig_keys', 'keys')
if data is not None: # There's an update
keyring = isc.dns.TSIGKeyRing()
for key_data in data:
key = isc.dns.TSIGKey(key_data)
if keyring.add(key) != isc.dns.TSIGKeyRing.SUCCESS:
raise AddError("Can't add key " + str(key))
self.__keyring = keyring