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# Authors: Ana Krivokapic <akrivoka@redhat.com>
#
# Copyright (C) 2013 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 os
from ipalib import api
from ipalib.plugable import Registry
from ipaserver.advise.base import Advice
from ipapython.ipautil import template_file, SHARE_DIR
register = Registry()
class config_base_legacy_client(Advice):
def get_uri_and_base(self):
uri = 'ldap://%s' % api.env.host
base = 'cn=compat,%s' % api.env.basedn
return uri, base
def check_compat_plugin(self):
compat_is_enabled = api.Command['compat_is_enabled']()['result']
if not compat_is_enabled:
self.log.comment(
'Schema Compatibility plugin has not been configured '
'on this server. To configure it, run '
'"ipa-adtrust-install --enable-compat"\n'
)
def configure_ca_cert(self):
self.log.comment('Please note that this script assumes '
'/etc/openldap/cacerts as the default CA certificate '
'location. If this value is different on your system '
'the script needs to be modified accordingly.\n')
cacertdir_rehash = ('https://fedorahosted.org/authconfig/browser/'
'cacertdir_rehash?format=txt')
self.log.comment('Download the CA certificate of the IPA server')
self.log.command('mkdir -p -m 755 /etc/openldap/cacerts')
self.log.command('curl http://%s/ipa/config/ca.crt -o '
'/etc/openldap/cacerts/ipa.crt\n' % api.env.host)
self.log.comment('Generate hashes for the openldap library')
self.log.command('command -v cacertdir_rehash')
self.log.command('if [ $? -ne 0 ] ; then')
self.log.command(' curl "%s" -o cacertdir_rehash ;' % cacertdir_rehash)
self.log.command(' chmod 755 ./cacertdir_rehash ;')
self.log.command(' ./cacertdir_rehash /etc/openldap/cacerts/ ;')
self.log.command('else')
self.log.command(' cacertdir_rehash /etc/openldap/cacerts/ ;')
self.log.command('fi\n')
def configure_and_start_sssd(self):
uri, base = self.get_uri_and_base()
template = os.path.join(
SHARE_DIR,
'advise',
'legacy',
'sssd.conf.template'
)
sssd_conf = template_file(template, dict(URI=uri, BASE=base))
self.log.comment('Configure SSSD')
self.log.command('cat > /etc/sssd/sssd.conf << EOF \n'
'%s\nEOF' % sssd_conf)
self.log.command('chmod 0600 /etc/sssd/sssd.conf\n')
self.log.comment('Start SSSD')
self.log.command('service sssd start')
@register()
class config_redhat_sssd_before_1_9(config_base_legacy_client):
"""
Legacy client configuration for Red Hat based systems, using SSSD.
"""
description = ('Instructions for configuring a system with an old version '
'of SSSD (1.5-1.8) as a FreeIPA client. This set of '
'instructions is targeted for platforms that include '
'the authconfig utility, which are all Red Hat based '
'platforms.')
def get_info(self):
self.check_compat_plugin()
self.log.comment('Install required packages via yum')
self.log.command('yum install -y sssd authconfig curl openssl\n')
self.configure_ca_cert()
self.log.comment('Use the authconfig to configure nsswitch.conf '
'and the PAM stack')
self.log.command('authconfig --updateall --enablesssd '
'--enablesssdauth\n')
self.configure_and_start_sssd()
def configure_ca_cert(self):
self.log.comment('NOTE: IPA certificate uses the SHA-256 hash '
'function. SHA-256 was introduced in RHEL5.2. '
'Therefore, clients older than RHEL5.2 will not be '
'able to interoperate with IPA server 3.x.')
super(config_redhat_sssd_before_1_9, self).configure_ca_cert()
@register()
class config_generic_linux_sssd_before_1_9(config_base_legacy_client):
"""
Legacy client configuration for non Red Hat based linux systems,
using SSSD.
"""
description = ('Instructions for configuring a system with an old version '
'of SSSD (1.5-1.8) as a FreeIPA client. This set of '
'instructions is targeted for linux systems that do not '
'include the authconfig utility.')
def get_info(self):
self.check_compat_plugin()
with open(os.path.join(
SHARE_DIR,
'advise',
'legacy',
'pam.conf.sssd.template')) as fd:
pam_conf = fd.read()
self.log.comment('Install required packages using your system\'s '
'package manager. E.g:')
self.log.command('apt-get -y install sssd curl openssl\n')
self.configure_ca_cert()
self.log.comment('Configure nsswitch.conf. Append sss to the lines '
'beginning with passwd and group. ')
self.log.command('grep "^passwd.*sss" /etc/nsswitch.conf')
self.log.command('if [ $? -ne 0 ] ; then sed -i '
'\'/^passwd/s|$| sss|\' /etc/nsswitch.conf ; fi')
self.log.command('grep "^group.*sss" /etc/nsswitch.conf')
self.log.command('if [ $? -ne 0 ] ; then sed -i '
'\'/^group/s|$| sss|\' /etc/nsswitch.conf ; fi\n')
self.log.comment('Configure PAM. Configuring the PAM stack differs on '
'particular distributions. The resulting PAM stack '
'should look like this:')
self.log.command('cat > /etc/pam.conf << EOF \n'
'%s\nEOF\n' % pam_conf)
self.configure_and_start_sssd()
def configure_ca_cert(self):
super(config_generic_linux_sssd_before_1_9, self).configure_ca_cert()
self.log.comment('Configure ldap.conf. Set the value of '
'TLS_CACERTDIR to /etc/openldap/cacerts. Make sure '
'that the location of ldap.conf file matches your '
'system\'s configuration.')
self.log.command('echo "TLS_CACERTDIR /etc/openldap/cacerts" >> '
'/etc/ldap/ldap.conf\n')
@register()
class config_redhat_nss_pam_ldapd(config_base_legacy_client):
"""
Legacy client configuration for Red Hat based systems,
using nss-pam-ldapd.
"""
description = ('Instructions for configuring a system with nss-pam-ldapd '
'as a FreeIPA client. This set of instructions is targeted '
'for platforms that include the authconfig utility, which '
'are all Red Hat based platforms.')
def get_info(self):
uri, base = self.get_uri_and_base()
self.check_compat_plugin()
self.log.comment('Install required packages via yum')
self.log.command('yum install -y curl openssl nss-pam-ldapd pam_ldap '
'authconfig\n')
self.configure_ca_cert()
self.log.comment('Use the authconfig to configure nsswitch.conf '
'and the PAM stack')
self.log.command('authconfig --updateall --enableldap --enableldaptls '
'--enableldapauth --ldapserver=%s --ldapbasedn=%s\n'
% (uri, base))
def configure_ca_cert(self):
self.log.comment('NOTE: IPA certificate uses the SHA-256 hash '
'function. SHA-256 was introduced in RHEL5.2. '
'Therefore, clients older than RHEL5.2 will not be '
'able to interoperate with IPA server 3.x.')
super(config_redhat_nss_pam_ldapd, self).configure_ca_cert()
@register()
class config_generic_linux_nss_pam_ldapd(config_base_legacy_client):
"""
Legacy client configuration for non Red Hat based linux systems,
using nss-pam-ldapd.
"""
description = ('Instructions for configuring a system with nss-pam-ldapd. '
'This set of instructions is targeted for linux systems '
'that do not include the authconfig utility.')
def get_info(self):
uri, base = self.get_uri_and_base()
self.check_compat_plugin()
with open(os.path.join(
SHARE_DIR,
'advise',
'legacy',
'pam.conf.nss_pam_ldapd.template')) as fd:
pam_conf = fd.read()
nslcd_conf = 'uri %s\nbase %s' % (uri, base)
self.log.comment('Install required packages using your system\'s '
'package manager. E.g:')
self.log.command('apt-get -y install curl openssl libnss-ldapd '
'libpam-ldapd nslcd\n')
self.configure_ca_cert()
self.log.comment('Configure nsswitch.conf. Append ldap to the lines '
'beginning with passwd and group. ')
self.log.command('grep "^passwd.*ldap" /etc/nsswitch.conf')
self.log.command('if [ $? -ne 0 ] ; then sed -i '
'\'/^passwd/s|$| ldap|\' /etc/nsswitch.conf ; fi')
self.log.command('grep "^group.*ldap" /etc/nsswitch.conf')
self.log.command('if [ $? -ne 0 ] ; then sed -i '
'\'/^group/s|$| ldap|\' /etc/nsswitch.conf ; fi\n')
self.log.comment('Configure PAM. Configuring the PAM stack differs on '
'particular distributions. The resulting PAM stack '
'should look like this:')
self.log.command('cat > /etc/pam.conf << EOF \n'
'%s\nEOF\n' % pam_conf)
self.log.comment('Configure nslcd.conf:')
self.log.command('cat > /etc/nslcd.conf << EOF \n'
'%s\nEOF\n' % nslcd_conf)
self.log.comment('Configure pam_ldap.conf:')
self.log.command('cat > /etc/pam_ldap.conf << EOF \n'
'%s\nEOF\n' % nslcd_conf)
self.log.comment('Stop nscd and restart nslcd')
self.log.command('service nscd stop && service nslcd restart')
def configure_ca_cert(self):
super(config_generic_linux_nss_pam_ldapd, self).configure_ca_cert()
self.log.comment('Configure ldap.conf. Set the value of '
'TLS_CACERTDIR to /etc/openldap/cacerts. Make sure '
'that the location of ldap.conf file matches your '
'system\'s configuration.')
self.log.command('echo "TLS_CACERTDIR /etc/openldap/cacerts" >> '
'/etc/ldap/ldap.conf\n')
@register()
class config_freebsd_nss_pam_ldapd(config_base_legacy_client):
"""
Legacy client configuration for FreeBSD, using nss-pam-ldapd.
"""
description = ('Instructions for configuring a FreeBSD system with '
'nss-pam-ldapd. ')
def get_info(self):
uri, base = self.get_uri_and_base()
cacrt = '/usr/local/etc/ipa.crt'
self.check_compat_plugin()
with open(os.path.join(
SHARE_DIR,
'advise',
'legacy',
'pam_conf_sshd.template')) as fd:
pam_conf = fd.read()
self.log.comment('Install required packages')
self.log.command('pkg_add -r nss-pam-ldapd curl\n')
self.configure_ca_cert(cacrt)
self.log.comment('Configure nsswitch.conf')
self.log.command('sed -i \'\' -e \'s/^passwd:/passwd: files ldap/\' '
'/etc/nsswitch.conf')
self.log.command('sed -i \'\' -e \'s/^group:/group: files ldap/\' '
'/etc/nsswitch.conf\n')
self.log.comment('Configure PAM stack for the sshd service')
self.log.command('cat > /etc/pam.d/sshd << EOF \n'
'%s\nEOF\n' % pam_conf)
self.log.comment('Add automated start of nslcd to /etc/rc.conf')
self.log.command('echo \'nslcd_enable="YES"\nnslcd_debug="NO"\' >> '
'/etc/rc.conf')
self.log.comment('Configure nslcd.conf:')
self.log.command('echo "uid nslcd\n'
'gid nslcd\n'
'uri %s\n'
'base %s\n'
'scope sub\n'
'base group cn=groups,%s\n'
'base passwd cn=users,%s\n'
'base shadow cn=users,%s\n'
'ssl start_tls\n'
'tls_cacertfile %s\n" > /usr/local/etc/nslcd.conf'
% ((uri,) + (base,)*4 + (cacrt,)))
self.log.comment('Configure ldap.conf:')
self.log.command('echo "uri %s\nbase %s\nssl start_tls\ntls_cacert %s"'
'> /usr/local/etc/ldap.conf' % (uri, base, cacrt))
self.log.comment('Restart nslcd')
self.log.command('/usr/local/etc/rc.d/nslcd restart')
def configure_ca_cert(self, cacrt):
self.log.comment('Download the CA certificate of the IPA server')
self.log.command('curl -k https://%s/ipa/config/ca.crt > '
'%s' % (api.env.host, cacrt))
@register()
class config_redhat_nss_ldap(config_base_legacy_client):
"""
Legacy client configuration for Red Hat based systems,
using nss-ldap.
"""
description = ('Instructions for configuring a system with nss-ldap '
'as a FreeIPA client. This set of instructions is targeted '
'for platforms that include the authconfig utility, which '
'are all Red Hat based platforms.')
def get_info(self):
uri, base = self.get_uri_and_base()
self.check_compat_plugin()
self.log.comment('Install required packages via yum')
self.log.command('yum install -y curl openssl nss_ldap '
'authconfig\n')
self.configure_ca_cert()
self.log.comment('Use the authconfig to configure nsswitch.conf '
'and the PAM stack')
self.log.command('authconfig --updateall --enableldap --enableldaptls '
'--enableldapauth --ldapserver=%s --ldapbasedn=%s\n'
% (uri, base))
def configure_ca_cert(self):
self.log.comment('NOTE: IPA certificate uses the SHA-256 hash '
'function. SHA-256 was introduced in RHEL5.2. '
'Therefore, clients older than RHEL5.2 will not be '
'able to interoperate with IPA server 3.x.')
super(config_redhat_nss_ldap, self).configure_ca_cert()
|
