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# Authors: Simo Sorce <ssorce@redhat.com>
#
# Copyright (C) 2007 Red Hat
# see file 'COPYING' for use and warranty information
#
# 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; version 2 only
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
import string
import tempfile
import shutil
import os
import socket
import logging
import service
from ipa import sysrestore
from ipa import ipautil
def check_inst():
# So far this file is always present in both RHEL5 and Fedora if all the necessary
# bind packages are installed (RHEL5 requires also the pkg: caching-nameserver)
if not os.path.exists('/etc/named.rfc1912.zones'):
return False
return True
class BindInstance(service.Service):
def __init__(self, fstore=None):
service.Service.__init__(self, "named")
self.fqdn = None
self.domain = None
self.host = None
self.ip_address = None
self.realm = None
self.sub_dict = None
if fstore:
self.fstore = fstore
else:
self.fstore = sysrestore.FileStore('/var/lib/ipa/sysrestore')
def setup(self, fqdn, ip_address, realm_name, domain_name):
self.fqdn = fqdn
self.ip_address = ip_address
self.realm = realm_name
self.domain = domain_name
self.host = fqdn.split(".")[0]
self.__setup_sub_dict()
def create_sample_bind_zone(self):
bind_txt = ipautil.template_file(ipautil.SHARE_DIR + "bind.zone.db.template", self.sub_dict)
[bind_fd, bind_name] = tempfile.mkstemp(".db","sample.zone.")
os.write(bind_fd, bind_txt)
os.close(bind_fd)
print "Sample zone file for bind has been created in "+bind_name
def create_instance(self):
try:
self.stop()
except:
pass
self.step("Setting up our zone", self.__setup_zone)
self.step("Setting up named.conf", self.__setup_named_conf)
self.step("restarting named", self.__start)
self.step("configuring named to start on boot", self.__enable)
self.step("Changing resolv.conf to point to ourselves", self.__setup_resolv_conf)
self.start_creation("Configuring bind:")
def __start(self):
try:
self.backup_state("running", self.is_running())
self.restart()
except:
print "named service failed to start"
def __enable(self):
self.backup_state("enabled", self.is_running())
self.chkconfig_on()
def __setup_sub_dict(self):
self.sub_dict = dict(FQDN=self.fqdn,
IP=self.ip_address,
DOMAIN=self.domain,
HOST=self.host,
REALM=self.realm)
def __setup_zone(self):
self.backup_state("domain", self.domain)
zone_txt = ipautil.template_file(ipautil.SHARE_DIR + "bind.zone.db.template", self.sub_dict)
self.fstore.backup_file('/var/named/'+self.domain+'.zone.db')
zone_fd = open('/var/named/'+self.domain+'.zone.db', 'w')
zone_fd.write(zone_txt)
zone_fd.close()
def __setup_named_conf(self):
self.fstore.backup_file('/etc/named.conf')
named_txt = ipautil.template_file(ipautil.SHARE_DIR + "bind.named.conf.template", self.sub_dict)
named_fd = open('/etc/named.conf', 'w')
named_fd.seek(0)
named_fd.truncate(0)
named_fd.write(named_txt)
named_fd.close()
def __setup_resolv_conf(self):
self.fstore.backup_file('/etc/resolv.conf')
resolv_txt = "search "+self.domain+"\nnameserver "+self.ip_address+"\n"
resolv_fd = open('/etc/resolv.conf', 'w')
resolv_fd.seek(0)
resolv_fd.truncate(0)
resolv_fd.write(resolv_txt)
resolv_fd.close()
def uninstall(self):
running = self.restore_state("running")
enabled = self.restore_state("enabled")
domain = self.restore_state("domain")
if not running is None:
self.stop()
if not domain is None:
try:
self.fstore.restore_file(os.path.join ("/var/named/", domain + ".zone.db"))
except ValueError, error:
logging.debug(error)
pass
for f in ["/etc/named.conf", "/etc/resolv.conf"]:
try:
self.fstore.restore_file(f)
except ValueError, error:
logging.debug(error)
pass
if not enabled is None and not enabled:
self.chkconfig_off()
if not running is None and running:
self.start()
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