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# Authors: John Dennis <jdennis@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, 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/>.
#
import subprocess
import string
import tempfile
import shutil
import logging
import pwd
import time
import sys
from ipa import ipautil
from ipa import radius_util
from ipaserver import service
import os
import re
IPA_RADIUS_VERSION = '0.0.0'
# FIXME there should a utility to get the user base dn
from ipaserver.funcs import DefaultUserContainer, DefaultGroupContainer
#-------------------------------------------------------------------------------
def get_radius_version():
version = None
try:
p = subprocess.Popen([radius_util.RADIUSD, '-v'], stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
stdout, stderr = p.communicate()
status = p.returncode
if status == 0:
match = re.search("radiusd: FreeRADIUS Version (.+), for host", stdout)
if match:
version = match.group(1)
except Exception, e:
pass
return version
#-------------------------------------------------------------------------------
class RadiusInstance(service.Service):
def __init__(self):
service.Service.__init__(self, "radiusd")
self.fqdn = None
self.realm = None
self.principal = None
def create_instance(self, realm_name, host_name, ldap_server):
self.realm = realm_name.upper()
self.suffix = ipautil.realm_to_suffix(self.realm)
self.fqdn = host_name
self.ldap_server = ldap_server
self.principal = "%s/%s@%s" % (radius_util.RADIUS_SERVICE_NAME, self.fqdn, self.realm)
self.basedn = self.suffix
self.user_basedn = "%s,%s" % (DefaultUserContainer, self.basedn) # FIXME, should be utility to get this
self.radius_version = get_radius_version()
try:
self.stop()
except:
# It could have been not running
pass
self.step("create radiusd keytab", self.__create_radius_keytab)
self.step("configuring radiusd.conf for radius instance", self.__radiusd_conf)
self.step("starting radiusd", self.__start_instance)
self.step("configuring radiusd to start on boot", self.chkconfig_on)
# FIXME:
# self.step("setting ldap encrypted attributes", self.__set_ldap_encrypted_attributes)
self.start_creation("Configuring radiusd")
def __start_instance(self):
try:
self.start()
except:
logging.error("radiusd service failed to start")
def __radiusd_conf(self):
version = 'IPA_RADIUS_VERSION=%s FREE_RADIUS_VERSION=%s' % (IPA_RADIUS_VERSION, self.radius_version)
sub_dict = {'CONFIG_FILE_VERSION_INFO' : version,
'LDAP_SERVER' : self.ldap_server,
'RADIUS_KEYTAB' : radius_util.RADIUS_IPA_KEYTAB_FILEPATH,
'RADIUS_PRINCIPAL' : self.principal,
'RADIUS_USER_BASE_DN' : self.user_basedn,
'ACCESS_ATTRIBUTE' : '',
'ACCESS_ATTRIBUTE_DEFAULT' : 'TRUE',
'CLIENTS_BASEDN' : radius_util.radius_clients_basedn(None, self.suffix),
'SUFFIX' : self.suffix,
}
try:
radiusd_conf = ipautil.template_file(radius_util.RADIUSD_CONF_TEMPLATE_FILEPATH, sub_dict)
radiusd_fd = open(radius_util.RADIUSD_CONF_FILEPATH, 'w+')
radiusd_fd.write(radiusd_conf)
radiusd_fd.close()
except Exception, e:
logging.error("could not create %s: %s", radius_util.RADIUSD_CONF_FILEPATH, e)
def __create_radius_keytab(self):
try:
if ipautil.file_exists(radius_util.RADIUS_IPA_KEYTAB_FILEPATH):
os.remove(radius_util.RADIUS_IPA_KEYTAB_FILEPATH)
except os.error:
logging.error("Failed to remove %s", radius_util.RADIUS_IPA_KEYTAB_FILEPATH)
(kwrite, kread, kerr) = os.popen3("/usr/kerberos/sbin/kadmin.local")
kwrite.write("addprinc -randkey %s\n" % (self.principal))
kwrite.flush()
kwrite.write("ktadd -k %s %s\n" % (radius_util.RADIUS_IPA_KEYTAB_FILEPATH, self.principal))
kwrite.flush()
kwrite.close()
kread.close()
kerr.close()
# give kadmin time to actually write the file before we go on
retry = 0
while not ipautil.file_exists(radius_util.RADIUS_IPA_KEYTAB_FILEPATH):
time.sleep(1)
retry += 1
if retry > 15:
print "Error timed out waiting for kadmin to finish operations\n"
sys.exit(1)
try:
pent = pwd.getpwnam(radius_util.RADIUS_USER)
os.chown(radius_util.RADIUS_IPA_KEYTAB_FILEPATH, pent.pw_uid, pent.pw_gid)
except Exception, e:
logging.error("could not chown on %s to %s: %s", radius_util.RADIUS_IPA_KEYTAB_FILEPATH, radius_util.RADIUS_USER, e)
def __ldap_mod(self, ldif):
txt = iputil.template_file(ipautil.SHARE_DIR + ldif, self.sub_dict)
fd = ipautil.write_tmp_file(txt)
args = ["/usr/bin/ldapmodify", "-h", "127.0.0.1", "-xv",
"-D", "cn=Directory Manager", "-w", self.dm_password, "-f", fd.name]
try:
ipautil.run(args)
except ipautil.CalledProcessError, e:
logging.critical("Failed to load %s: %s" % (ldif, str(e)))
fd.close()
#FIXME, should use IPAdmin method
def __set_ldap_encrypted_attributes(self):
self.__ldap_mod("encrypted_attribute.ldif", {"ENCRYPTED_ATTRIBUTE" : "radiusClientSecret"})
#-------------------------------------------------------------------------------
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