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#
# Copyright (C) 2014 FreeIPA Contributors see COPYING for license
#
import random
import service
import os
import pwd
import grp
import stat
import _ipap11helper
import installutils
from ipapython.ipa_log_manager import *
from ipapython.dn import DN
from ipapython import sysrestore, ipautil, ipaldap, p11helper
from ipaplatform import services
from ipaplatform.paths import paths
from ipalib import errors, api
from ipaserver.install import dnskeysyncinstance
KEYMASTER = u'dnssecKeyMaster'
softhsm_slot = 0
def get_dnssec_key_masters(conn):
"""
:return: list of active dnssec key masters
"""
assert conn is not None
dn = DN(('cn', 'masters'), ('cn', 'ipa'), ('cn', 'etc'), api.env.basedn)
filter_attrs = {
u'cn': u'DNSSEC',
u'objectclass': u'ipaConfigObject',
u'ipaConfigString': [KEYMASTER, u'enabledService'],
}
only_masters_f = conn.make_filter(filter_attrs, rules=conn.MATCH_ALL)
try:
entries = conn.find_entries(filter=only_masters_f, base_dn=dn)
except errors.NotFound:
return []
keymasters_list = []
for entry in entries[0]:
keymasters_list.append(str(entry.dn[1].value))
return keymasters_list
def check_inst():
if not os.path.exists(paths.ODS_KSMUTIL):
print ("Please install the 'opendnssec' package and start "
"the installation again")
return False
return True
class OpenDNSSECInstance(service.Service):
def __init__(self, fstore=None, dm_password=None, ldapi=False,
start_tls=False, autobind=ipaldap.AUTOBIND_DISABLED):
service.Service.__init__(
self, "ods-enforcerd",
service_desc="OpenDNSSEC enforcer daemon",
dm_password=dm_password,
ldapi=ldapi,
autobind=autobind,
start_tls=start_tls
)
self.dm_password = dm_password
self.ods_uid = None
self.ods_gid = None
self.conf_file_dict = {
'SOFTHSM_LIB': paths.LIBSOFTHSM2_SO,
'TOKEN_LABEL': dnskeysyncinstance.softhsm_token_label,
'KASP_DB': paths.OPENDNSSEC_KASP_DB,
}
self.kasp_file_dict = {}
self.extra_config = [KEYMASTER]
if fstore:
self.fstore = fstore
else:
self.fstore = sysrestore.FileStore(paths.SYSRESTORE)
suffix = ipautil.dn_attribute_property('_suffix')
def get_masters(self):
if not self.admin_conn:
self.ldap_connect()
return get_dnssec_key_masters(self.admin_conn)
def create_instance(self, fqdn, realm_name, generate_master_key=True):
self.backup_state("enabled", self.is_enabled())
self.backup_state("running", self.is_running())
self.fqdn = fqdn
self.realm = realm_name
self.suffix = ipautil.realm_to_suffix(self.realm)
try:
self.stop()
except Exception:
pass
# get a connection to the DS
if not self.admin_conn:
self.ldap_connect()
# checking status must be first
self.step("checking status", self.__check_dnssec_status)
self.step("setting up configuration files", self.__setup_conf_files)
self.step("setting up ownership and file mode bits", self.__setup_ownership_file_modes)
if generate_master_key:
self.step("generating master key", self.__generate_master_key)
self.step("setting up OpenDNSSEC", self.__setup_dnssec)
self.step("setting up ipa-dnskeysyncd", self.__setup_dnskeysyncd)
self.step("starting OpenDNSSEC enforcer", self.__start)
self.step("configuring OpenDNSSEC enforcer to start on boot", self.__enable)
self.start_creation()
def __check_dnssec_status(self):
named = services.knownservices.named
ods_enforcerd = services.knownservices.ods_enforcerd
try:
self.named_uid = pwd.getpwnam(named.get_user_name()).pw_uid
except KeyError:
raise RuntimeError("Named UID not found")
try:
self.named_gid = grp.getgrnam(named.get_group_name()).gr_gid
except KeyError:
raise RuntimeError("Named GID not found")
try:
self.ods_uid = pwd.getpwnam(ods_enforcerd.get_user_name()).pw_uid
except KeyError:
raise RuntimeError("OpenDNSSEC UID not found")
try:
self.ods_gid = grp.getgrnam(ods_enforcerd.get_group_name()).gr_gid
except KeyError:
raise RuntimeError("OpenDNSSEC GID not found")
def __enable(self):
try:
self.ldap_enable('DNSSEC', self.fqdn, self.dm_password,
self.suffix, self.extra_config)
except errors.DuplicateEntry:
root_logger.error("DNSSEC service already exists")
def __setup_conf_files(self):
if not self.fstore.has_file(paths.OPENDNSSEC_CONF_FILE):
self.fstore.backup_file(paths.OPENDNSSEC_CONF_FILE)
if not self.fstore.has_file(paths.OPENDNSSEC_KASP_FILE):
self.fstore.backup_file(paths.OPENDNSSEC_KASP_FILE)
pin_fd = open(paths.DNSSEC_SOFTHSM_PIN, "r")
pin = pin_fd.read()
pin_fd.close()
# add pin to template
sub_conf_dict = self.conf_file_dict
sub_conf_dict['PIN'] = pin
ods_conf_txt = ipautil.template_file(
ipautil.SHARE_DIR + "opendnssec_conf.template", sub_conf_dict)
ods_conf_fd = open(paths.OPENDNSSEC_CONF_FILE, 'w')
ods_conf_fd.seek(0)
ods_conf_fd.truncate(0)
ods_conf_fd.write(ods_conf_txt)
ods_conf_fd.close()
ods_kasp_txt = ipautil.template_file(
ipautil.SHARE_DIR + "opendnssec_kasp.template", self.kasp_file_dict)
ods_kasp_fd = open(paths.OPENDNSSEC_KASP_FILE, 'w')
ods_kasp_fd.seek(0)
ods_kasp_fd.truncate(0)
ods_kasp_fd.write(ods_kasp_txt)
ods_kasp_fd.close()
if not self.fstore.has_file(paths.SYSCONFIG_ODS):
self.fstore.backup_file(paths.SYSCONFIG_ODS)
installutils.set_directive(paths.SYSCONFIG_ODS,
'SOFTHSM2_CONF',
paths.DNSSEC_SOFTHSM2_CONF,
quotes=False, separator='=')
def __setup_ownership_file_modes(self):
assert self.ods_uid is not None
assert self.ods_gid is not None
# workarounds for packaging bugs in opendnssec-1.4.5-2.fc20.x86_64
# https://bugzilla.redhat.com/show_bug.cgi?id=1098188
for (root, dirs, files) in os.walk(paths.ETC_OPENDNSSEC_DIR):
for directory in dirs:
dir_path = os.path.join(root, directory)
os.chmod(dir_path, 0770)
# chown to root:ods
os.chown(dir_path, 0, self.ods_gid)
for filename in files:
file_path = os.path.join(root, filename)
os.chmod(file_path, 0660)
# chown to root:ods
os.chown(file_path, 0, self.ods_gid)
for (root, dirs, files) in os.walk(paths.VAR_OPENDNSSEC_DIR):
for directory in dirs:
dir_path = os.path.join(root, directory)
os.chmod(dir_path, 0770)
# chown to ods:ods
os.chown(dir_path, self.ods_uid, self.ods_gid)
for filename in files:
file_path = os.path.join(root, filename)
os.chmod(file_path, 0660)
# chown to ods:ods
os.chown(file_path, self.ods_uid, self.ods_gid)
def __generate_master_key(self):
with open(paths.DNSSEC_SOFTHSM_PIN, "r") as f:
pin = f.read()
os.environ["SOFTHSM2_CONF"] = paths.DNSSEC_SOFTHSM2_CONF
p11 = _ipap11helper.P11_Helper(softhsm_slot, pin, paths.LIBSOFTHSM2_SO)
try:
# generate master key
root_logger.debug("Creating master key")
p11helper.generate_master_key(p11)
# change tokens mod/owner
root_logger.debug("Changing ownership of token files")
for (root, dirs, files) in os.walk(paths.DNSSEC_TOKENS_DIR):
for directory in dirs:
dir_path = os.path.join(root, directory)
os.chmod(dir_path, 0770 | stat.S_ISGID)
os.chown(dir_path, self.ods_uid, self.named_gid) # chown to ods:named
for filename in files:
file_path = os.path.join(root, filename)
os.chmod(file_path, 0770 | stat.S_ISGID)
os.chown(file_path, self.ods_uid, self.named_gid) # chown to ods:named
finally:
p11.finalize()
def __setup_dnssec(self):
# run once only
if self.get_state("KASP_DB_configured"):
root_logger.debug("Already configured, skipping step")
self.backup_state("KASP_DB_configured", True)
if not self.fstore.has_file(paths.OPENDNSSEC_KASP_DB):
self.fstore.backup_file(paths.OPENDNSSEC_KASP_DB)
command = [
paths.ODS_KSMUTIL,
'setup'
]
ods_enforcerd = services.knownservices.ods_enforcerd
ipautil.run(command, stdin="y", runas=ods_enforcerd.get_user_name())
def __setup_dnskeysyncd(self):
# set up dnskeysyncd this is DNSSEC master
installutils.set_directive(paths.SYSCONFIG_IPA_DNSKEYSYNCD,
'ISMASTER',
'1',
quotes=False, separator='=')
def __start(self):
self.restart() # needed to reload conf files
def uninstall(self):
if not self.is_configured():
return
self.print_msg("Unconfiguring %s" % self.service_name)
running = self.restore_state("running")
enabled = self.restore_state("enabled")
for f in [paths.OPENDNSSEC_CONF_FILE, paths.OPENDNSSEC_KASP_FILE,
paths.OPENDNSSEC_KASP_DB, paths.SYSCONFIG_ODS]:
try:
self.fstore.restore_file(f)
except ValueError, error:
root_logger.debug(error)
pass
# disabled by default, by ldap_enable()
if enabled:
self.enable()
if running:
self.restart()
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