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# Authors: Karl MacMillan <kmacmillan@redhat.com>
# Authors: Simo Sorce <ssorce@redhat.com>
#
# Copyright (C) 2007-2010 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, either version 3 of the License, or
# (at your option) any later version.
#
# 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, see <http://www.gnu.org/licenses/>.
#
from ipaserver.install import service
from ipapython import sysrestore
from ipapython import ipautil
from ipaplatform.constants import constants
from ipaplatform.paths import paths
from ipapython.ipa_log_manager import root_logger
NTPD_OPTS_VAR = constants.NTPD_OPTS_VAR
NTPD_OPTS_QUOTE = constants.NTPD_OPTS_QUOTE
class NTPInstance(service.Service):
def __init__(self, fstore=None):
service.Service.__init__(self, "ntpd", service_desc="NTP daemon")
if fstore:
self.fstore = fstore
else:
self.fstore = sysrestore.FileStore(paths.SYSRESTORE)
def __write_config(self):
self.fstore.backup_file(paths.NTP_CONF)
self.fstore.backup_file(paths.SYSCONFIG_NTPD)
# We use the OS variable to point it towards either the rhel
# or fedora pools. Other distros should be added in the future
# or we can get our own pool.
os = ""
if ipautil.file_exists(paths.ETC_FEDORA_RELEASE):
os = "fedora"
elif ipautil.file_exists(paths.ETC_REDHAT_RELEASE):
os = "rhel"
srv_vals = []
srv_vals.append("0.%s.pool.ntp.org" % os)
srv_vals.append("1.%s.pool.ntp.org" % os)
srv_vals.append("2.%s.pool.ntp.org" % os)
srv_vals.append("3.%s.pool.ntp.org" % os)
srv_vals.append("127.127.1.0")
fudge = ["fudge", "127.127.1.0", "stratum", "10"]
#read in memory, change it, then overwrite file
file_changed = False
fudge_present = False
ntpconf = []
fd = open(paths.NTP_CONF, "r")
for line in fd:
opt = line.split()
if len(opt) < 1:
ntpconf.append(line)
continue
if opt[0] == "server":
match = False
for srv in srv_vals:
if opt[1] == srv:
match = True
break
if match:
srv_vals.remove(srv)
else:
file_changed = True
line = ""
elif opt[0] == "fudge":
if opt[0:4] == fudge[0:4]:
fudge_present = True
else:
file_changed = True
line = ""
ntpconf.append(line)
if file_changed or len(srv_vals) != 0 or not fudge_present:
fd = open(paths.NTP_CONF, "w")
for line in ntpconf:
fd.write(line)
fd.write("\n### Added by IPA Installer ###\n")
if len(srv_vals) != 0:
for srv in srv_vals:
fd.write("server "+srv+" iburst\n")
if not fudge_present:
fd.write("fudge 127.127.1.0 stratum 10\n")
fd.close()
#read in memory, find OPTIONS, check/change it, then overwrite file
needopts = [ {'val':'-x', 'need':True},
{'val':'-g', 'need':True} ]
fd = open(paths.SYSCONFIG_NTPD, "r")
lines = fd.readlines()
fd.close()
for line in lines:
sline = line.strip()
if not sline.startswith(NTPD_OPTS_VAR):
continue
sline = sline.replace(NTPD_OPTS_QUOTE, '')
for opt in needopts:
if sline.find(opt['val']) != -1:
opt['need'] = False
newopts = []
for opt in needopts:
if opt['need']:
newopts.append(opt['val'])
done = False
if newopts:
fd = open(paths.SYSCONFIG_NTPD, "w")
for line in lines:
if not done:
sline = line.strip()
if not sline.startswith(NTPD_OPTS_VAR):
fd.write(line)
continue
sline = sline.replace(NTPD_OPTS_QUOTE, '')
(variable, opts) = sline.split('=', 1)
fd.write(NTPD_OPTS_VAR + '="%s %s"\n' % (opts, ' '.join(newopts)))
done = True
else:
fd.write(line)
fd.close()
def __stop(self):
self.backup_state("running", self.is_running())
self.stop()
def __start(self):
self.start()
def __enable(self):
self.backup_state("enabled", self.is_enabled())
self.enable()
def create_instance(self):
# we might consider setting the date manually using ntpd -qg in case
# the current time is very far off.
self.step("stopping ntpd", self.__stop)
self.step("writing configuration", self.__write_config)
self.step("configuring ntpd to start on boot", self.__enable)
self.step("starting ntpd", self.__start)
self.start_creation()
def uninstall(self):
if self.is_configured():
self.print_msg("Unconfiguring %s" % self.service_name)
running = self.restore_state("running")
enabled = self.restore_state("enabled")
# service is not in LDAP, stop and disable service
# before restoring configuration
self.stop()
self.disable()
try:
self.fstore.restore_file(paths.NTP_CONF)
except ValueError as error:
root_logger.debug(error)
if enabled:
self.enable()
if running:
self.restart()
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