# vim: set encoding=utf-8 et sw=4 sts=4 :
-# TODO COMMENT
-from os import path
-from os import unlink
-import logging ; log = logging.getLogger('pymin.services.dns')
-
-from pymin.seqtools import Sequence
-from pymin.dispatcher import handler, HandlerError, Handler
-from pymin.service.util import Restorable, ConfigWriter, InitdHandler, \
- TransactionalHandler, ParametersHandler, \
- DictComposedSubHandler, DictSubHandler, call
-
-__all__ = ('DnsHandler', 'get_service')
-
+from formencode import validators as V
+from pymin.config import Option
+from handler import DnsHandler
+
+def setup_service(options, config):
+ options.add_group('dns', 'DNS service', [
+ Option('pickle_dir', V.String, metavar='DIR',
+ help='store persistent data in DIR directory'),
+ Option('config_named_dir', V.String, metavar='DIR',
+ help='write named config files in DIR directory'),
+ Option('config_zones_dir', V.String, metavar='DIR',
+ help='write zone config files in DIR directory'),
+ ])
def get_service(config):
- return DnsHandler(config.dns.pickle_dir, config.dns.config_dir)
-
-
-class Host(Sequence):
- def __init__(self, name, ip):
- self.name = name
- self.ip = ip
- def update(self, ip=None):
- if ip is not None: self.ip = ip
- def as_tuple(self):
- return (self.name, self.ip)
-
-class HostHandler(DictComposedSubHandler):
- handler_help = u"Manage DNS hosts"
- _comp_subhandler_cont = 'zones'
- _comp_subhandler_attr = 'hosts'
- _comp_subhandler_class = Host
-
-class MailExchange(Sequence):
- def __init__(self, mx, prio):
- self.mx = mx
- self.prio = prio
- def update(self, prio=None):
- if prio is not None: self.prio = prio
- def as_tuple(self):
- return (self.mx, self.prio)
-
-class MailExchangeHandler(DictComposedSubHandler):
- handler_help = u"Manage DNS mail exchangers (MX)"
- _comp_subhandler_cont = 'zones'
- _comp_subhandler_attr = 'mxs'
- _comp_subhandler_class = MailExchange
-
-class NameServer(Sequence):
- def __init__(self, name):
- self.name = name
- def as_tuple(self):
- return (self.name,)
-
-class NameServerHandler(DictComposedSubHandler):
- handler_help = u"Manage DNS name servers (NS)"
- _comp_subhandler_cont = 'zones'
- _comp_subhandler_attr = 'nss'
- _comp_subhandler_class = NameServer
-
-class Zone(Sequence):
- def __init__(self, name):
- self.name = name
- self.hosts = dict()
- self.mxs = dict()
- self.nss = dict()
- self._add = False
- self._update = False
- self._delete = False
- def as_tuple(self):
- return (self.name, self.hosts, self.mxs, self.nss)
-
-class ZoneHandler(DictSubHandler):
- handler_help = u"Manage DNS zones"
- _cont_subhandler_attr = 'zones'
- _cont_subhandler_class = Zone
-
-class DnsHandler(Restorable, ConfigWriter, InitdHandler, TransactionalHandler,
- ParametersHandler):
- r"""DnsHandler([pickle_dir[, config_dir]]) -> DnsHandler instance.
-
- Handles DNS service commands for the dns program.
-
- pickle_dir - Directory where to write the persistent configuration data.
-
- config_dir - Directory where to store de generated configuration files.
-
- Both defaults to the current working directory.
- """
-
- handler_help = u"Manage DNS service"
-
- _initd_name = 'named'
-
- _persistent_attrs = ('params', 'zones')
-
- _restorable_defaults = dict(
- zones = dict(),
- params = dict(
- isp_dns1 = '',
- isp_dns2 = '',
- bind_addr1 = '',
- bind_addr2 = ''
- ),
- )
-
- _config_writer_files = ('named.conf', 'zoneX.zone')
- _config_writer_tpl_dir = path.join(path.dirname(__file__), 'templates')
-
- def __init__(self, pickle_dir='.', config_dir='.'):
- r"Initialize DnsHandler object, see class documentation for details."
- log.debug(u'DnsHandler(%r, %r)', pickle_dir, config_dir)
- self._persistent_dir = pickle_dir
- self._config_writer_cfg_dir = config_dir
- self._update = False
- self._config_build_templates()
- InitdHandler.__init__(self)
- self.host = HostHandler(self)
- self.zone = ZoneHandler(self)
- self.mx = MailExchangeHandler(self)
- self.ns = NameServerHandler(self)
-
- def _zone_filename(self, zone):
- return zone.name + '.zone'
-
- def _get_config_vars(self, config_file):
- return dict(zones=self.zones.values(), **self.params)
-
- def _write_config(self):
- r"_write_config() -> None :: Generate all the configuration files."
- log.debug(u'DnsHandler._write_config()')
- delete_zones = list()
- for a_zone in self.zones.values():
- log.debug(u'DnsHandler._write_config: processing zone %s', a_zone)
- if a_zone._update or a_zone._add:
- if not a_zone._add and self._service_running:
- log.debug(u'DnsHandler._write_config: zone updated and '
- u'the service is running, freezing zone')
- call(('rndc', 'freeze', a_zone.name))
- vars = dict(
- zone = a_zone,
- hosts = a_zone.hosts.values(),
- mxs = a_zone.mxs.values(),
- nss = a_zone.nss.values()
- )
- self._write_single_config('zoneX.zone',
- self._zone_filename(a_zone), vars)
- a_zone._update = False
- if not a_zone._add and self._service_running:
- log.debug(u'DnsHandler._write_config: unfreezing zone')
- call(('rndc', 'thaw', a_zone.name))
- else :
- self._update = True
- a_zone._add = False
- if a_zone._delete:
- #borro el archivo .zone
- log.debug(u'DnsHandler._write_config: zone deleted, removing '
- u'the file %r', self._zone_filename(a_zone))
- try:
- self._update = True
- unlink(self._zone_filename(a_zone))
- except OSError:
- #la excepcion pude darse en caso que haga un add de una zona y
- #luego el del, como no hice commit, no se crea el archivo
- log.debug(u'DnsHandler._write_config: file not found')
- pass
- delete_zones.append(a_zone.name)
- #borro las zonas
- for z in delete_zones:
- del self.zones[z]
- #archivo general
- if self._update:
- self._write_single_config('named.conf')
- self._update = False
- return False # Do reload
- return True # we don't need to reload
-
- # HACK!!!!
- def handle_timer(self):
- log.debug(u'DnsHandler.handle_timer()')
- import subprocess
- p = subprocess.Popen(('pgrep', '-f', '/usr/sbin/named'),
- stdout=subprocess.PIPE)
- pid = p.communicate()[0]
- if p.returncode == 0 and len(pid) > 0:
- log.debug(u'DnsHandler.handle_timer: pid present, running')
- self._service_running = True
- else:
- log.debug(u'DnsHandler.handle_timer: pid absent, NOT running')
- self._service_running = False
-
-
-
-if __name__ == '__main__':
-
- logging.basicConfig(
- level = logging.DEBUG,
- format = '%(asctime)s %(levelname)-8s %(message)s',
- datefmt = '%H:%M:%S',
- )
-
- dns = DnsHandler();
-
- dns.set('isp_dns1','la_garcha.com')
- dns.set('bind_addr1','localhost')
- dns.zone.add('zona_loca.com')
- #dns.zone.update('zona_loca.com','ns1.dominio.com')
-
- dns.host.add('zona_loca.com','hostname_loco','192.168.0.23')
- dns.host.update('zona_loca.com','hostname_loco','192.168.0.66')
-
- dns.host.add('zona_loca.com','hostname_kuak','192.168.0.23')
- dns.host.delete('zona_loca.com','hostname_kuak')
-
- dns.host.add('zona_loca.com','hostname_kuang','192.168.0.24')
- dns.host.add('zona_loca.com','hostname_chan','192.168.0.25')
- dns.host.add('zona_loca.com','hostname_kaine','192.168.0.26')
-
- dns.mx.add('zona_loca.com','mx1.sarasa.com',10)
- dns.mx.update('zona_loca.com','mx1.sarasa.com',20)
- dns.mx.add('zona_loca.com','mx2.sarasa.com',30)
- dns.mx.add('zona_loca.com','mx3.sarasa.com',40)
- dns.mx.delete('zona_loca.com','mx3.sarasa.com')
-
- dns.ns.add('zona_loca.com','ns1.jua.com')
- dns.ns.add('zona_loca.com','ns2.jua.com')
- dns.ns.add('zona_loca.com','ns3.jua.com')
- dns.ns.delete('zona_loca.com','ns3.jua.com')
-
- dns.zone.add('zona_oscura')
-
- dns.host.add('zona_oscura','hostname_a','192.168.0.24')
- dns.host.add('zona_oscura','hostname_b','192.168.0.25')
- dns.host.add('zona_oscura','hostname_c','192.168.0.26')
-
- dns.zone.delete('zona_oscura')
-
- dns.commit()
-
- print 'ZONAS :', dns.zone.show()
- for z in dns.zones:
- print 'HOSTS from', z, ':', dns.host.show(z)
-
- #test zone errors
- #try:
- # dns.zone.update('zone-sarasa','lalal')
- #except ZoneNotFoundError, inst:
- # print 'Error: ', inst
-
- from pymin.services.util import ItemNotFoundError, ItemAlreadyExistsError, \
- ContainerNotFoundError
-
- try:
- dns.zone.delete('zone-sarasa')
- except ItemNotFoundError, inst:
- print 'Error: ', inst
-
- #try:
- # dns.zone.add('zona_loca.com','ns1.dom.com','ns2.dom.com')
- #except ZoneAlreadyExistsError, inst:
- # print 'Error: ', inst
-
-
- #test hosts errors
- try:
- dns.host.update('zone-sarasa','kuak','192.68')
- except ContainerNotFoundError, inst:
- print 'Error: ', inst
-
- try:
- dns.host.update('zona_loca.com','kuak','192.68')
- except ItemNotFoundError, inst:
- print 'Error: ', inst
-
- try:
- dns.host.delete('zone-sarasa','lala')
- except ContainerNotFoundError, inst:
- print 'Error: ', inst
-
- try:
- dns.host.delete('zona_loca.com','lala')
- except ItemNotFoundError, inst:
- print 'Error: ', inst
-
- try:
- dns.host.add('zona','hostname_loco','192.168.0.23')
- except ContainerNotFoundError, inst:
- print 'Error: ', inst
+ return DnsHandler(config.dns.pickle_dir, {
+ 'named.conf': config.dns.config_named_dir,
+ 'zoneX.zone': config.dns.config_zones_dir,
+ })
- try:
- dns.host.add('zona_loca.com','hostname_loco','192.168.0.23')
- except ItemAlreadyExistsError, inst:
- print 'Error: ', inst
projects / software / pymin.git / blobdiff