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freeipa/ipaclient/install/client.py
Martin Basti f3537297be Remove network and broadcast address warnings 
We cannot reliably determine when an IP Address is network or broadcast.
We allowed to use non-local IP addresses due container use cases, we
don't know subnets of used IP addresses.

https://pagure.io/freeipa/issue/4317

Reviewed-By: David Kupka <dkupka@redhat.com>
2017-06-20 11:29:41 +02:00

3636 lines
126 KiB
Python
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#
# Copyright (C) 2016 FreeIPA Contributors see COPYING for license
#
"""
IPA client install module
Provides methods for installation, uninstallation of IPA client
"""
from __future__ import (
print_function,
absolute_import,
)
import dns
import getpass
import gssapi
import netifaces
import os
import SSSDConfig
import socket
import sys
import tempfile
import time
import traceback
from cryptography.hazmat.primitives import serialization
# pylint: disable=import-error
from six.moves.configparser import RawConfigParser
from six.moves.urllib.parse import urlparse, urlunparse
# pylint: enable=import-error
from ipalib import api, errors, x509
from ipalib.install import certmonger, certstore, service, sysrestore
from ipalib.install import hostname as hostname_
from ipalib.install.kinit import kinit_keytab, kinit_password
from ipalib.install.service import enroll_only, prepare_only
from ipalib.rpc import delete_persistent_client_session_data
from ipalib.util import (
normalize_hostname,
no_matching_interface_for_ip_address_warning,
verify_host_resolvable,
)
from ipaplatform import services
from ipaplatform.paths import paths
from ipaplatform.tasks import tasks
from ipapython import certdb, kernel_keyring, ipaldap, ipautil
from ipapython.admintool import ScriptError
from ipapython.dn import DN
from ipapython.install import typing
from ipapython.install.core import group, knob, extend_knob
from ipapython.install.common import step
from ipapython.ipa_log_manager import log_mgr, root_logger
from ipapython.ipautil import (
CalledProcessError,
dir_exists,
file_exists,
realm_to_suffix,
run,
user_input,
)
from ipapython.ssh import SSHPublicKey
from . import automount, ipadiscovery, ntpconf, sssd
from .ipachangeconf import IPAChangeConf
NoneType = type(None)
SUCCESS = 0
CLIENT_INSTALL_ERROR = 1
CLIENT_NOT_CONFIGURED = 2
CLIENT_ALREADY_CONFIGURED = 3
CLIENT_UNINSTALL_ERROR = 4 # error after restoring files/state
SECURE_PATH = (
"/bin:/sbin:/usr/kerberos/bin:/usr/kerberos/sbin:/usr/bin:/usr/sbin"
)
# global variables
hostname = None
hostname_source = None
nosssd_files = None
dnsok = False
cli_domain = None
cli_server = None
subject_base = None
cli_realm = None
cli_kdc = None
client_domain = None
cli_basedn = None
# end of global variables
def remove_file(filename):
"""
Deletes a file. If the file does not exist (OSError 2) does nothing.
Otherwise logs an error message and instructs the user to remove the
offending file manually
:param filename: name of the file to be removed
"""
try:
os.remove(filename)
except OSError as e:
if e.errno == 2:
return
root_logger.error("Failed to remove file %s: %s", filename, e)
root_logger.error('Please remove %s manually, as it can cause '
'subsequent installation to fail.', filename)
def log_service_error(name, action, error):
root_logger.error("%s failed to %s: %s", name, action, str(error))
def get_cert_path(cert_path):
"""
If a CA certificate is passed in on the command line, use that.
Else if a CA file exists in paths.IPA_CA_CRT then use that.
Otherwise return None.
"""
if cert_path is not None:
return cert_path
if os.path.exists(paths.IPA_CA_CRT):
return paths.IPA_CA_CRT
return None
def save_state(service, statestore):
enabled = service.is_enabled()
running = service.is_running()
if enabled or running:
statestore.backup_state(service.service_name, 'enabled', enabled)
statestore.backup_state(service.service_name, 'running', running)
def restore_state(service, statestore):
enabled = statestore.restore_state(service.service_name, 'enabled')
running = statestore.restore_state(service.service_name, 'running')
if enabled:
try:
service.enable()
except Exception:
root_logger.warning(
"Failed to configure automatic startup of the %s daemon",
service.service_name
)
if running:
try:
service.start()
except Exception:
root_logger.warning(
"Failed to restart the %s daemon",
service.service_name
)
def nssldap_exists():
"""Checks whether nss_ldap or nss-pam-ldapd is installed.
If anyone of mandatory files was found returns True and list of all files
found.
"""
files_to_check = [
{
'function': 'configure_ldap_conf',
'mandatory': [
paths.LDAP_CONF,
paths.NSS_LDAP_CONF,
paths.LIBNSS_LDAP_CONF],
'optional':[paths.PAM_LDAP_CONF]
},
{
'function': 'configure_nslcd_conf',
'mandatory': [paths.NSLCD_CONF]
}
]
files_found = {}
retval = False
for function in files_to_check:
files_found[function['function']] = []
for file_type in ['mandatory', 'optional']:
try:
for filename in function[file_type]:
if file_exists(filename):
files_found[function['function']].append(filename)
if file_type == 'mandatory':
retval = True
except KeyError:
pass
return (retval, files_found)
def delete_ipa_domain():
"""Helper function for uninstall.
Deletes IPA domain from sssd.conf
"""
try:
sssdconfig = SSSDConfig.SSSDConfig()
sssdconfig.import_config()
domains = sssdconfig.list_active_domains()
ipa_domain_name = None
for name in domains:
domain = sssdconfig.get_domain(name)
try:
provider = domain.get_option('id_provider')
if provider == "ipa":
ipa_domain_name = name
break
except SSSDConfig.NoOptionError:
continue
if ipa_domain_name is not None:
sssdconfig.delete_domain(ipa_domain_name)
sssdconfig.write()
else:
root_logger.warning(
"IPA domain could not be found in "
"/etc/sssd/sssd.conf and therefore not deleted")
except IOError:
root_logger.warning(
"IPA domain could not be deleted. "
"No access to the /etc/sssd/sssd.conf file.")
def is_ipa_client_installed(fstore, on_master=False):
"""
Consider IPA client not installed if nothing is backed up
and default.conf file does not exist. If on_master is set to True,
the existence of default.conf file is not taken into consideration,
since it has been already created by ipa-server-install.
"""
installed = (
fstore.has_files() or (
not on_master and os.path.exists(paths.IPA_DEFAULT_CONF)
)
)
return installed
def configure_nsswitch_database(fstore, database, services, preserve=True,
append=True, default_value=()):
"""
Edits the specified nsswitch.conf database (e.g. passwd, group, sudoers)
to use the specified service(s).
Arguments:
fstore - FileStore to backup the nsswitch.conf
database - database configuration that should be ammended,
e.g. 'sudoers'
service - list of services that should be added, e.g. ['sss']
preserve - if True, the already configured services will be preserved
The next arguments modify the behaviour if preserve=True:
append - if True, the services will be appended, if False, prepended
default_value - list of services that are considered as default (if
the database is not mentioned in nsswitch.conf), e.g.
['files']
"""
# Backup the original version of nsswitch.conf, we're going to edit it now
if not fstore.has_file(paths.NSSWITCH_CONF):
fstore.backup_file(paths.NSSWITCH_CONF)
conf = IPAChangeConf("IPA Installer")
conf.setOptionAssignment(':')
if preserve:
# Read the existing configuration
with open(paths.NSSWITCH_CONF, 'r') as f:
opts = conf.parse(f)
raw_database_entry = conf.findOpts(opts, 'option', database)[1]
# Detect the list of already configured services
if not raw_database_entry:
# If there is no database entry, database is not present in
# the nsswitch.conf. Set the list of services to the
# default list, if passed.
configured_services = list(default_value)
else:
configured_services = raw_database_entry['value'].strip().split()
# Make sure no service is added if already mentioned in the list
added_services = [s for s in services
if s not in configured_services]
# Prepend / append the list of new services
if append:
new_value = ' ' + ' '.join(configured_services + added_services)
else:
new_value = ' ' + ' '.join(added_services + configured_services)
else:
# Preserve not set, let's rewrite existing configuration
new_value = ' ' + ' '.join(services)
# Set new services as sources for database
opts = [
conf.setOption(database, new_value),
conf.emptyLine(),
]
conf.changeConf(paths.NSSWITCH_CONF, opts)
root_logger.info("Configured %s in %s" % (database, paths.NSSWITCH_CONF))
def configure_ipa_conf(
fstore, cli_basedn, cli_realm, cli_domain, cli_server, hostname):
ipaconf = IPAChangeConf("IPA Installer")
ipaconf.setOptionAssignment(" = ")
ipaconf.setSectionNameDelimiters(("[", "]"))
opts = [
{
'name': 'comment',
'type': 'comment',
'value': 'File modified by ipa-client-install'
},
ipaconf.emptyLine(),
]
# [global]
defopts = [
ipaconf.setOption('basedn', cli_basedn),
ipaconf.setOption('realm', cli_realm),
ipaconf.setOption('domain', cli_domain),
ipaconf.setOption('server', cli_server[0]),
ipaconf.setOption('host', hostname),
ipaconf.setOption('xmlrpc_uri',
'https://{}/ipa/xml'.format(
ipautil.format_netloc(cli_server[0]))),
ipaconf.setOption('enable_ra', 'True')
]
opts.extend([
ipaconf.setSection('global', defopts),
ipaconf.emptyLine(),
])
target_fname = paths.IPA_DEFAULT_CONF
fstore.backup_file(target_fname)
ipaconf.newConf(target_fname, opts)
# umask applies when creating a new file but we want 0o644 here
os.chmod(target_fname, 0o644)
def disable_ra():
"""Set the enable_ra option in /etc/ipa/default.conf to False
Note that api.env will retain the old value (it is readonly).
"""
parser = RawConfigParser()
parser.read(paths.IPA_DEFAULT_CONF)
parser.set('global', 'enable_ra', 'False')
fp = open(paths.IPA_DEFAULT_CONF, 'w')
parser.write(fp)
fp.close()
def configure_ldap_conf(
fstore, cli_basedn, cli_realm, cli_domain, cli_server, dnsok, options,
files):
ldapconf = IPAChangeConf("IPA Installer")
ldapconf.setOptionAssignment(" ")
opts = [
{
'name': 'comment',
'type': 'comment',
'value': 'File modified by ipa-client-install'
},
ldapconf.emptyLine(),
ldapconf.setOption('ldap_version', '3'),
ldapconf.setOption('base', cli_basedn),
ldapconf.emptyLine(),
ldapconf.setOption(
'nss_base_passwd', '{dn}{suffix}'
.format(dn=DN(('cn', 'users'), ('cn', 'accounts'), cli_basedn),
suffix='?sub')),
ldapconf.setOption(
'nss_base_group', '{dn}{suffix}'
.format(dn=DN(('cn', 'groups'), ('cn', 'accounts'), cli_basedn),
suffix='?sub')),
ldapconf.setOption('nss_schema', 'rfc2307bis'),
ldapconf.setOption('nss_map_attribute', 'uniqueMember member'),
ldapconf.setOption('nss_initgroups_ignoreusers', 'root,dirsrv'),
ldapconf.emptyLine(),
ldapconf.setOption('nss_reconnect_maxsleeptime', '8'),
ldapconf.setOption('nss_reconnect_sleeptime', '1'),
ldapconf.setOption('bind_timelimit', '5'),
ldapconf.setOption('timelimit', '15'),
ldapconf.emptyLine(),
]
if not dnsok or options.force or options.on_master:
if options.on_master:
opts.append(ldapconf.setOption('uri', 'ldap://localhost'))
else:
opts.append(ldapconf.setOption('uri', 'ldap://{}'.format(
ipautil.format_netloc(cli_server[0]))))
else:
opts.append(ldapconf.setOption('nss_srv_domain', cli_domain))
opts.append(ldapconf.emptyLine())
# Depending on the release and distribution this may exist in any
# number of different file names, update what we find
for filename in files:
try:
fstore.backup_file(filename)
ldapconf.newConf(filename, opts)
except Exception as e:
root_logger.error("Creation of %s failed: %s", filename, str(e))
return (1, 'LDAP', filename)
if files:
return (0, 'LDAP', ', '.join(files))
return 0, None, None
def configure_nslcd_conf(
fstore, cli_basedn, cli_realm, cli_domain, cli_server, dnsok, options,
files):
nslcdconf = IPAChangeConf("IPA Installer")
nslcdconf.setOptionAssignment(" ")
opts = [
{
'name': 'comment',
'type': 'comment',
'value': 'File modified by ipa-client-install'
},
nslcdconf.emptyLine(),
nslcdconf.setOption('ldap_version', '3'),
nslcdconf.setOption('base', cli_basedn),
nslcdconf.emptyLine(),
nslcdconf.setOption('base passwd', str(
DN(('cn', 'users'), ('cn', 'accounts'), cli_basedn))),
nslcdconf.setOption('base group', str(
DN(('cn', 'groups'), ('cn', 'accounts'), cli_basedn))),
nslcdconf.setOption('timelimit', '15'),
nslcdconf.emptyLine(),
]
if not dnsok or options.force or options.on_master:
if options.on_master:
opts.append(nslcdconf.setOption('uri', 'ldap://localhost'))
else:
opts.append(nslcdconf.setOption('uri', 'ldap://{}'.format(
ipautil.format_netloc(cli_server[0]))))
else:
opts.append(nslcdconf.setOption('uri', 'DNS'))
opts.append(nslcdconf.emptyLine())
for filename in files:
try:
fstore.backup_file(filename)
nslcdconf.newConf(filename, opts)
except Exception as e:
root_logger.error("Creation of %s failed: %s", filename, str(e))
return (1, None, None)
nslcd = services.knownservices.nslcd
if nslcd.is_installed():
try:
nslcd.restart()
except Exception as e:
log_service_error(nslcd.service_name, 'restart', e)
try:
nslcd.enable()
except Exception as e:
root_logger.error(
"Failed to enable automatic startup of the %s daemon: %s",
nslcd.service_name, str(e))
else:
root_logger.debug(
"%s daemon is not installed, skip configuration",
nslcd.service_name)
return (0, None, None)
return (0, 'NSLCD', ', '.join(files))
def configure_openldap_conf(fstore, cli_basedn, cli_server):
ldapconf = IPAChangeConf("IPA Installer")
ldapconf.setOptionAssignment((" ", "\t"))
opts = [
{
'name': 'comment',
'type': 'comment',
'value': ' File modified by ipa-client-install'
},
ldapconf.emptyLine(),
{
'name': 'comment',
'type': 'comment',
'value': ' We do not want to break your existing configuration, '
'hence:'
},
# this needs to be kept updated if we change more options
{
'name': 'comment',
'type': 'comment',
'value': ' URI, BASE and TLS_CACERT have been added if they '
'were not set.'
},
{
'name': 'comment',
'type': 'comment',
'value': ' In case any of them were set, a comment with '
'trailing note'
},
{
'name': 'comment',
'type': 'comment',
'value': ' "# modified by IPA" note has been inserted.'
},
{
'name': 'comment',
'type': 'comment',
'value': ' To use IPA server with openLDAP tools, please comment '
'out your'
},
{
'name': 'comment',
'type': 'comment',
'value': ' existing configuration for these options and '
'uncomment the'
},
{
'name': 'comment',
'type': 'comment',
'value': ' corresponding lines generated by IPA.'
},
ldapconf.emptyLine(),
ldapconf.emptyLine(),
{
'action': 'addifnotset',
'name': 'URI',
'type': 'option',
'value': 'ldaps://{}'.format(cli_server[0])
},
{
'action': 'addifnotset',
'name': 'BASE',
'type': 'option',
'value': str(cli_basedn)
},
{
'action': 'addifnotset',
'name': 'TLS_CACERT',
'type': 'option',
'value': paths.IPA_CA_CRT
},
]
target_fname = paths.OPENLDAP_LDAP_CONF
fstore.backup_file(target_fname)
error_msg = "Configuring {path} failed with: {err}"
try:
ldapconf.changeConf(target_fname, opts)
except SyntaxError as e:
root_logger.info("Could not parse {path}".format(path=target_fname))
root_logger.debug(error_msg.format(path=target_fname, err=str(e)))
return False
except IOError as e:
root_logger.info("{path} does not exist.".format(path=target_fname))
root_logger.debug(error_msg.format(path=target_fname, err=str(e)))
return False
except Exception as e: # we do not want to fail in an optional step
root_logger.debug(error_msg.format(path=target_fname, err=str(e)))
return False
os.chmod(target_fname, 0o644)
return True
def hardcode_ldap_server(cli_server):
"""
DNS Discovery didn't return a valid IPA server, hardcode a value into
the file instead.
"""
if not file_exists(paths.LDAP_CONF):
return
ldapconf = IPAChangeConf("IPA Installer")
ldapconf.setOptionAssignment(" ")
opts = [
ldapconf.setOption('uri', 'ldap://{}'.format(
ipautil.format_netloc(cli_server[0]))),
ldapconf.emptyLine(),
]
# Errors raised by this should be caught by the caller
ldapconf.changeConf(paths.LDAP_CONF, opts)
root_logger.info(
"Changed configuration of /etc/ldap.conf to use "
"hardcoded server name: %s", cli_server[0])
def configure_krb5_conf(
cli_realm, cli_domain, cli_server, cli_kdc, dnsok,
filename, client_domain, client_hostname, force=False,
configure_sssd=True):
krbconf = IPAChangeConf("IPA Installer")
krbconf.setOptionAssignment((" = ", " "))
krbconf.setSectionNameDelimiters(("[", "]"))
krbconf.setSubSectionDelimiters(("{", "}"))
krbconf.setIndent(("", " ", " "))
opts = [
{
'name': 'comment',
'type': 'comment',
'value': 'File modified by ipa-client-install'
},
krbconf.emptyLine(),
{
'name': 'includedir',
'type': 'option',
'value': paths.COMMON_KRB5_CONF_DIR,
'delim': ' '
}
]
# SSSD include dir
if configure_sssd:
opts.extend([
{
'name': 'includedir',
'type': 'option',
'value': paths.SSSD_PUBCONF_KRB5_INCLUDE_D_DIR,
'delim': ' '
},
krbconf.emptyLine()])
# [libdefaults]
libopts = [
krbconf.setOption('default_realm', cli_realm)
]
if not dnsok or not cli_kdc or force:
libopts.extend([
krbconf.setOption('dns_lookup_realm', 'false'),
krbconf.setOption('dns_lookup_kdc', 'false')
])
else:
libopts.extend([
krbconf.setOption('dns_lookup_realm', 'true'),
krbconf.setOption('dns_lookup_kdc', 'true')
])
libopts.extend([
krbconf.setOption('rdns', 'false'),
krbconf.setOption('dns_canonicalize_hostname', 'false'),
krbconf.setOption('ticket_lifetime', '24h'),
krbconf.setOption('forwardable', 'true'),
krbconf.setOption('udp_preference_limit', '0')
])
# Configure KEYRING CCACHE if supported
if kernel_keyring.is_persistent_keyring_supported():
root_logger.debug("Enabling persistent keyring CCACHE")
libopts.append(krbconf.setOption('default_ccache_name',
'KEYRING:persistent:%{uid}'))
opts.extend([
krbconf.setSection('libdefaults', libopts),
krbconf.emptyLine()
])
# the following are necessary only if DNS discovery does not work
kropts = []
if not dnsok or not cli_kdc or force:
# [realms]
for server in cli_server:
kropts.extend([
krbconf.setOption('kdc', ipautil.format_netloc(server, 88)),
krbconf.setOption('master_kdc',
ipautil.format_netloc(server, 88)),
krbconf.setOption('admin_server',
ipautil.format_netloc(server, 749)),
krbconf.setOption('kpasswd_server',
ipautil.format_netloc(server, 464))
])
kropts.append(krbconf.setOption('default_domain', cli_domain))
kropts.append(
krbconf.setOption('pkinit_anchors',
'FILE:%s' % paths.KDC_CA_BUNDLE_PEM))
kropts.append(
krbconf.setOption('pkinit_pool',
'FILE:%s' % paths.CA_BUNDLE_PEM))
ropts = [{
'name': cli_realm,
'type': 'subsection',
'value': kropts
}]
opts.append(krbconf.setSection('realms', ropts))
opts.append(krbconf.emptyLine())
# [domain_realm]
dropts = [
krbconf.setOption('.{}'.format(cli_domain), cli_realm),
krbconf.setOption(cli_domain, cli_realm),
krbconf.setOption(client_hostname, cli_realm)
]
# add client domain mapping if different from server domain
if cli_domain != client_domain:
dropts.extend([
krbconf.setOption('.{}'.format(client_domain), cli_realm),
krbconf.setOption(client_domain, cli_realm)
])
opts.extend([
krbconf.setSection('domain_realm', dropts),
krbconf.emptyLine()
])
root_logger.debug("Writing Kerberos configuration to %s:", filename)
root_logger.debug("%s", krbconf.dump(opts))
krbconf.newConf(filename, opts)
# umask applies when creating a new file but we want 0o644 here
os.chmod(filename, 0o644)
def configure_certmonger(
fstore, subject_base, cli_realm, hostname, options, ca_enabled):
if not options.request_cert:
return
if not ca_enabled:
root_logger.warning("An RA is not configured on the server. "
"Not requesting host certificate.")
return
principal = 'host/%s@%s' % (hostname, cli_realm)
if options.hostname:
# If the hostname is explicitly set then we need to tell certmonger
# which principal name to use when requesting certs.
certmonger.add_principal_to_cas(principal)
cmonger = services.knownservices.certmonger
try:
cmonger.enable()
except Exception as e:
root_logger.error(
"Failed to configure automatic startup of the %s daemon: %s",
cmonger.service_name, str(e))
root_logger.warning(
"Automatic certificate management will not be available")
# Request our host cert
subject = str(DN(('CN', hostname), subject_base))
passwd_fname = os.path.join(paths.IPA_NSSDB_DIR, 'pwdfile.txt')
try:
certmonger.request_cert(
certpath=paths.IPA_NSSDB_DIR,
nickname='Local IPA host', subject=subject, dns=[hostname],
principal=principal, passwd_fname=passwd_fname)
except Exception as ex:
root_logger.error(
"%s request for host certificate failed: %s",
cmonger.service_name, ex)
def configure_sssd_conf(
fstore, cli_realm, cli_domain, cli_server, options,
client_domain, client_hostname):
try:
sssdconfig = SSSDConfig.SSSDConfig()
sssdconfig.import_config()
except Exception as e:
if os.path.exists(paths.SSSD_CONF) and options.preserve_sssd:
# SSSD config is in place but we are unable to read it
# In addition, we are instructed to preserve it
# This all means we can't use it and have to bail out
root_logger.error(
"SSSD config exists but cannot be parsed: %s", str(e))
root_logger.error(
"Was instructed to preserve existing SSSD config")
root_logger.info(
"Correct errors in /etc/sssd/sssd.conf and re-run "
"installation")
return 1
# SSSD configuration does not exist or we are not asked to preserve it,
# create new one
# We do make new SSSDConfig instance because IPAChangeConf-derived
# classes have no means to reset their state and ParseError exception
# could come due to parsing error from older version which cannot be
# upgraded anymore, leaving sssdconfig instance practically unusable
# Note that we already backed up sssd.conf before going into this
# routine
if isinstance(e, IOError):
pass
else:
# It was not IOError so it must have been parsing error
root_logger.error(
"Unable to parse existing SSSD config. "
"As option --preserve-sssd was not specified, new config "
"will override the old one.")
root_logger.info(
"The old /etc/sssd/sssd.conf is backed up and "
"will be restored during uninstall.")
root_logger.info("New SSSD config will be created")
sssdconfig = SSSDConfig.SSSDConfig()
sssdconfig.new_config()
try:
domain = sssdconfig.new_domain(cli_domain)
except SSSDConfig.DomainAlreadyExistsError:
root_logger.info(
"Domain %s is already configured in existing SSSD "
"config, creating a new one.",
cli_domain)
root_logger.info(
"The old /etc/sssd/sssd.conf is backed up and will be restored "
"during uninstall.")
sssdconfig = SSSDConfig.SSSDConfig()
sssdconfig.new_config()
domain = sssdconfig.new_domain(cli_domain)
if options.on_master:
sssd_enable_service(sssdconfig, 'ifp')
if (
(options.conf_ssh and file_exists(paths.SSH_CONFIG)) or
(options.conf_sshd and file_exists(paths.SSHD_CONFIG))
):
try:
sssdconfig.new_service('ssh')
except SSSDConfig.ServiceAlreadyExists:
pass
except SSSDConfig.ServiceNotRecognizedError:
root_logger.error(
"Unable to activate the SSH service in SSSD config.")
root_logger.info(
"Please make sure you have SSSD built with SSH support "
"installed.")
root_logger.info(
"Configure SSH support manually in /etc/sssd/sssd.conf.")
sssdconfig.activate_service('ssh')
if options.conf_sudo:
# Activate the service in the SSSD config
try:
sssdconfig.new_service('sudo')
except SSSDConfig.ServiceAlreadyExists:
pass
except SSSDConfig.ServiceNotRecognizedError:
root_logger.error(
"Unable to activate the SUDO service in SSSD config.")
sssdconfig.activate_service('sudo')
configure_nsswitch_database(
fstore, 'sudoers', ['sss'],
default_value=['files'])
domain.add_provider('ipa', 'id')
# add discovery domain if client domain different from server domain
# do not set this config in server mode (#3947)
if not options.on_master and cli_domain != client_domain:
domain.set_option('dns_discovery_domain', cli_domain)
if not options.on_master:
if options.primary:
domain.set_option('ipa_server', ', '.join(cli_server))
else:
domain.set_option(
'ipa_server', '_srv_, %s' % ', '.join(cli_server))
else:
domain.set_option('ipa_server_mode', 'True')
# the master should only use itself for Kerberos
domain.set_option('ipa_server', cli_server[0])
# increase memcache timeout to 10 minutes when in server mode
try:
nss_service = sssdconfig.get_service('nss')
except SSSDConfig.NoServiceError:
nss_service = sssdconfig.new_service('nss')
nss_service.set_option('memcache_timeout', 600)
sssdconfig.save_service(nss_service)
domain.set_option('ipa_domain', cli_domain)
domain.set_option('ipa_hostname', client_hostname)
if cli_domain.lower() != cli_realm.lower():
domain.set_option('krb5_realm', cli_realm)
# Might need this if /bin/hostname doesn't return a FQDN
# domain.set_option('ipa_hostname', 'client.example.com')
domain.add_provider('ipa', 'auth')
domain.add_provider('ipa', 'chpass')
if not options.permit:
domain.add_provider('ipa', 'access')
else:
domain.add_provider('permit', 'access')
domain.set_option('cache_credentials', True)
# SSSD will need TLS for checking if ipaMigrationEnabled attribute is set
# Note that SSSD will force StartTLS because the channel is later used for
# authentication as well if password migration is enabled. Thus set
# the option unconditionally.
domain.set_option('ldap_tls_cacert', paths.IPA_CA_CRT)
if options.dns_updates:
domain.set_option('dyndns_update', True)
if options.all_ip_addresses:
domain.set_option('dyndns_iface', '*')
else:
iface = get_server_connection_interface(cli_server[0])
domain.set_option('dyndns_iface', iface)
if options.krb5_offline_passwords:
domain.set_option('krb5_store_password_if_offline', True)
domain.set_active(True)
sssdconfig.save_domain(domain)
sssdconfig.write(paths.SSSD_CONF)
return 0
def sssd_enable_service(sssdconfig, service):
try:
sssdconfig.new_service(service)
except SSSDConfig.ServiceAlreadyExists:
pass
except SSSDConfig.ServiceNotRecognizedError:
root_logger.error(
"Unable to activate the %s service in SSSD config.", service)
root_logger.info(
"Please make sure you have SSSD built with %s support "
"installed.", service)
root_logger.info(
"Configure %s support manually in /etc/sssd/sssd.conf.", service)
sssdconfig.activate_service(service)
def change_ssh_config(filename, changes, sections):
if not changes:
return True
try:
f = open(filename, 'r')
except IOError as e:
root_logger.error("Failed to open '%s': %s", filename, str(e))
return False
change_keys = tuple(key.lower() for key in changes)
section_keys = tuple(key.lower() for key in sections)
lines = []
in_section = False
for line in f:
line = line.rstrip('\n')
pline = line.strip()
if not pline or pline.startswith('#'):
lines.append(line)
continue
option = pline.split()[0].lower()
if option in section_keys:
in_section = True
break
if option in change_keys:
line = '#' + line
lines.append(line)
for option, value in changes.items():
if value is not None:
lines.append('%s %s' % (option, value))
if in_section:
lines.append('')
lines.append(line)
for line in f:
line = line.rstrip('\n')
lines.append(line)
lines.append('')
f.close()
try:
f = open(filename, 'w')
except IOError as e:
root_logger.error("Failed to open '%s': %s", filename, str(e))
return False
f.write('\n'.join(lines))
f.close()
return True
def configure_ssh_config(fstore, options):
if not file_exists(paths.SSH_CONFIG):
root_logger.info("%s not found, skipping configuration",
paths.SSH_CONFIG)
return
fstore.backup_file(paths.SSH_CONFIG)
changes = {'PubkeyAuthentication': 'yes'}
if options.sssd and file_exists(paths.SSS_SSH_KNOWNHOSTSPROXY):
changes[
'ProxyCommand'] = '%s -p %%p %%h' % paths.SSS_SSH_KNOWNHOSTSPROXY
changes['GlobalKnownHostsFile'] = paths.SSSD_PUBCONF_KNOWN_HOSTS
if options.trust_sshfp:
changes['VerifyHostKeyDNS'] = 'yes'
changes['HostKeyAlgorithms'] = 'ssh-rsa,ssh-dss'
change_ssh_config(paths.SSH_CONFIG, changes, ['Host', 'Match'])
root_logger.info('Configured %s', paths.SSH_CONFIG)
def configure_sshd_config(fstore, options):
sshd = services.knownservices.sshd
if not file_exists(paths.SSHD_CONFIG):
root_logger.info("%s not found, skipping configuration",
paths.SSHD_CONFIG)
return
fstore.backup_file(paths.SSHD_CONFIG)
changes = {
'PubkeyAuthentication': 'yes',
'KerberosAuthentication': 'no',
'GSSAPIAuthentication': 'yes',
'UsePAM': 'yes',
'ChallengeResponseAuthentication': 'yes',
}
if options.sssd and file_exists(paths.SSS_SSH_AUTHORIZEDKEYS):
authorized_keys_changes = None
candidates = (
{
'AuthorizedKeysCommand': paths.SSS_SSH_AUTHORIZEDKEYS,
'AuthorizedKeysCommandUser': 'nobody',
},
{
'AuthorizedKeysCommand': paths.SSS_SSH_AUTHORIZEDKEYS,
'AuthorizedKeysCommandRunAs': 'nobody',
},
{
'PubKeyAgent': '%s %%u' % paths.SSS_SSH_AUTHORIZEDKEYS,
'PubKeyAgentRunAs': 'nobody',
},
)
for candidate in candidates:
args = ['sshd', '-t', '-f', os.devnull]
for item in candidate.items():
args.append('-o')
args.append('%s=%s' % item)
result = ipautil.run(args, raiseonerr=False)
if result.returncode == 0:
authorized_keys_changes = candidate
break
if authorized_keys_changes is not None:
changes.update(authorized_keys_changes)
else:
root_logger.warning(
"Installed OpenSSH server does not support dynamically "
"loading authorized user keys. Public key authentication of "
"IPA users will not be available.")
change_ssh_config(paths.SSHD_CONFIG, changes, ['Match'])
root_logger.info('Configured %s', paths.SSHD_CONFIG)
if sshd.is_running():
try:
sshd.restart()
except Exception as e:
log_service_error(sshd.service_name, 'restart', e)
def configure_automount(options):
root_logger.info('\nConfiguring automount:')
args = [
'ipa-client-automount', '--debug', '-U', '--location',
options.location
]
if options.server:
args.extend(['--server', options.server[0]])
if not options.sssd:
args.append('--no-sssd')
try:
result = run(args)
except Exception as e:
root_logger.error('Automount configuration failed: %s', str(e))
else:
root_logger.info(result.output_log)
def configure_nisdomain(options, domain, statestore):
domain = options.nisdomain or domain
root_logger.info('Configuring %s as NIS domain.' % domain)
nis_domain_name = ''
# First backup the old NIS domain name
if os.path.exists(paths.BIN_NISDOMAINNAME):
try:
result = ipautil.run(
[paths.BIN_NISDOMAINNAME],
capture_output=True)
except CalledProcessError:
pass
else:
nis_domain_name = result.output
statestore.backup_state('network', 'nisdomain', nis_domain_name)
# Backup the state of the domainname service
statestore.backup_state(
"domainname", "enabled",
services.knownservices.domainname.is_enabled())
# Set the new NIS domain name
tasks.set_nisdomain(domain)
# Enable and start the domainname service
services.knownservices.domainname.enable()
# Restart rather than start so that new NIS domain name is loaded
# if the service is already running
services.knownservices.domainname.restart()
def unconfigure_nisdomain(statestore):
# Set the nisdomain permanent and current nisdomain configuration as it was
if statestore.has_state('network'):
old_nisdomain = statestore.restore_state('network', 'nisdomain') or ''
if old_nisdomain:
root_logger.info('Restoring %s as NIS domain.' % old_nisdomain)
else:
root_logger.info('Unconfiguring the NIS domain.')
tasks.set_nisdomain(old_nisdomain)
# Restore the configuration of the domainname service
enabled = statestore.restore_state('domainname', 'enabled')
if not enabled:
services.knownservices.domainname.disable()
def get_iface_from_ip(ip_addr):
for interface in netifaces.interfaces():
if_addrs = netifaces.ifaddresses(interface)
for family in [netifaces.AF_INET, netifaces.AF_INET6]:
for ip in if_addrs.get(family, []):
if ip['addr'] == ip_addr:
return interface
else:
raise RuntimeError("IP %s not assigned to any interface." % ip_addr)
def get_local_ipaddresses(iface=None):
if iface:
interfaces = [iface]
else:
interfaces = netifaces.interfaces()
ips = []
for interface in interfaces:
if_addrs = netifaces.ifaddresses(interface)
for family in [netifaces.AF_INET, netifaces.AF_INET6]:
for ip in if_addrs.get(family, []):
try:
ips.append(ipautil.CheckedIPAddress(ip['addr']))
root_logger.debug('IP check successful: %s' % ip['addr'])
except ValueError as e:
root_logger.debug('IP check failed: %s' % e)
return ips
def do_nsupdate(update_txt):
root_logger.debug("Writing nsupdate commands to %s:", UPDATE_FILE)
root_logger.debug("%s", update_txt)
update_fd = open(UPDATE_FILE, "w")
update_fd.write(update_txt)
update_fd.flush()
update_fd.close()
result = False
try:
ipautil.run([paths.NSUPDATE, '-g', UPDATE_FILE])
result = True
except CalledProcessError as e:
root_logger.debug('nsupdate failed: %s', str(e))
try:
os.remove(UPDATE_FILE)
except Exception:
pass
return result
DELETE_TEMPLATE_A = """
update delete $HOSTNAME. IN A
show
send
"""
DELETE_TEMPLATE_AAAA = """
update delete $HOSTNAME. IN AAAA
show
send
"""
ADD_TEMPLATE_A = """
update add $HOSTNAME. $TTL IN A $IPADDRESS
show
send
"""
ADD_TEMPLATE_AAAA = """
update add $HOSTNAME. $TTL IN AAAA $IPADDRESS
show
send
"""
UPDATE_FILE = paths.IPA_DNS_UPDATE_TXT
CCACHE_FILE = paths.IPA_DNS_CCACHE
def update_dns(server, hostname, options):
try:
ips = get_local_ipaddresses()
except CalledProcessError as e:
root_logger.error("Cannot update DNS records. %s" % e)
root_logger.debug("Unable to get local IP addresses.")
if options.all_ip_addresses:
update_ips = ips
elif options.ip_addresses:
update_ips = []
for ip in options.ip_addresses:
update_ips.append(ipautil.CheckedIPAddress(ip))
else:
try:
iface = get_server_connection_interface(server)
except RuntimeError as e:
root_logger.error("Cannot update DNS records. %s" % e)
return
try:
update_ips = get_local_ipaddresses(iface)
except CalledProcessError as e:
root_logger.error("Cannot update DNS records. %s" % e)
return
if not update_ips:
root_logger.info("Failed to determine this machine's ip address(es).")
return
no_matching_interface_for_ip_address_warning(update_ips)
update_txt = "debug\n"
update_txt += ipautil.template_str(DELETE_TEMPLATE_A,
dict(HOSTNAME=hostname))
update_txt += ipautil.template_str(DELETE_TEMPLATE_AAAA,
dict(HOSTNAME=hostname))
for ip in update_ips:
sub_dict = dict(HOSTNAME=hostname, IPADDRESS=ip, TTL=1200)
if ip.version == 4:
template = ADD_TEMPLATE_A
elif ip.version == 6:
template = ADD_TEMPLATE_AAAA
update_txt += ipautil.template_str(template, sub_dict)
if not do_nsupdate(update_txt):
root_logger.error("Failed to update DNS records.")
verify_dns_update(hostname, update_ips)
def verify_dns_update(fqdn, ips):
"""
Verify that the fqdn resolves to all IP addresses and
that there's matching PTR record for every IP address.
"""
# verify A/AAAA records
missing_ips = [str(ip) for ip in ips]
extra_ips = []
for record_type in [dns.rdatatype.A, dns.rdatatype.AAAA]:
root_logger.debug('DNS resolver: Query: %s IN %s' %
(fqdn, dns.rdatatype.to_text(record_type)))
try:
answers = dns.resolver.query(fqdn, record_type)
except (dns.resolver.NoAnswer, dns.resolver.NXDOMAIN):
root_logger.debug('DNS resolver: No record.')
except dns.resolver.NoNameservers:
root_logger.debug('DNS resolver: No nameservers answered the'
'query.')
except dns.exception.DNSException:
root_logger.debug('DNS resolver error.')
else:
for rdata in answers:
try:
missing_ips.remove(rdata.address)
except ValueError:
extra_ips.append(rdata.address)
# verify PTR records
fqdn_name = dns.name.from_text(fqdn)
wrong_reverse = {}
missing_reverse = [str(ip) for ip in ips]
for ip in ips:
ip_str = str(ip)
addr = dns.reversename.from_address(ip_str)
root_logger.debug('DNS resolver: Query: %s IN PTR' % addr)
try:
answers = dns.resolver.query(addr, dns.rdatatype.PTR)
except (dns.resolver.NoAnswer, dns.resolver.NXDOMAIN):
root_logger.debug('DNS resolver: No record.')
except dns.resolver.NoNameservers:
root_logger.debug('DNS resolver: No nameservers answered the'
'query.')
except dns.exception.DNSException:
root_logger.debug('DNS resolver error.')
else:
missing_reverse.remove(ip_str)
for rdata in answers:
if not rdata.target == fqdn_name:
wrong_reverse.setdefault(ip_str, []).append(rdata.target)
if missing_ips:
root_logger.warning('Missing A/AAAA record(s) for host %s: %s.' %
(fqdn, ', '.join(missing_ips)))
if extra_ips:
root_logger.warning('Extra A/AAAA record(s) for host %s: %s.' %
(fqdn, ', '.join(extra_ips)))
if missing_reverse:
root_logger.warning('Missing reverse record(s) for address(es): %s.' %
', '.join(missing_reverse))
if wrong_reverse:
root_logger.warning('Incorrect reverse record(s):')
for ip in wrong_reverse:
for target in wrong_reverse[ip]:
root_logger.warning('%s is pointing to %s instead of %s' %
(ip, target, fqdn_name))
def get_server_connection_interface(server):
"""Connect to IPA server, get all ip addresses of interface used to connect
"""
for res in socket.getaddrinfo(
server, 389, socket.AF_UNSPEC, socket.SOCK_STREAM):
af, socktype, proto, _canonname, sa = res
try:
s = socket.socket(af, socktype, proto)
except socket.error as e:
last_error = e
s = None
continue
try:
s.connect(sa)
sockname = s.getsockname()
ip = sockname[0]
except socket.error as e:
last_error = e
continue
finally:
if s:
s.close()
try:
return get_iface_from_ip(ip)
except (CalledProcessError, RuntimeError) as e:
last_error = e
else:
msg = "Cannot get server connection interface"
if last_error:
msg += ": %s" % (last_error)
raise RuntimeError(msg)
def client_dns(server, hostname, options):
try:
verify_host_resolvable(hostname)
dns_ok = True
except errors.DNSNotARecordError:
root_logger.warning("Hostname (%s) does not have A/AAAA record.",
hostname)
dns_ok = False
except errors.DNSResolverError as ex:
root_logger.warning("DNS resolution for hostname %s failed: %s",
hostname, ex)
dns_ok = False
if (
options.dns_updates or options.all_ip_addresses or
options.ip_addresses or not dns_ok
):
update_dns(server, hostname, options)
def check_ip_addresses(options):
if options.ip_addresses:
for ip in options.ip_addresses:
try:
ipautil.CheckedIPAddress(ip)
except ValueError as e:
root_logger.error(e)
return False
return True
def update_ssh_keys(hostname, ssh_dir, create_sshfp):
if not os.path.isdir(ssh_dir):
return
pubkeys = []
for basename in os.listdir(ssh_dir):
if not basename.endswith('.pub'):
continue
filename = os.path.join(ssh_dir, basename)
try:
f = open(filename, 'r')
except IOError as e:
root_logger.warning("Failed to open '%s': %s", filename, str(e))
continue
for line in f:
line = line[:-1].lstrip()
if not line or line.startswith('#'):
continue
try:
pubkey = SSHPublicKey(line)
except (ValueError, UnicodeDecodeError):
continue
root_logger.info("Adding SSH public key from %s", filename)
pubkeys.append(pubkey)
f.close()
try:
# Use the RPC directly so older servers are supported
api.Backend.rpcclient.forward(
'host_mod',
ipautil.fsdecode(hostname),
ipasshpubkey=[pk.openssh() for pk in pubkeys],
updatedns=False,
version=u'2.26', # this version adds support for SSH public keys
)
except errors.EmptyModlist:
pass
except Exception as e:
root_logger.info("host_mod: %s", str(e))
root_logger.warning("Failed to upload host SSH public keys.")
return
if create_sshfp:
ttl = 1200
update_txt = 'debug\n'
update_txt += 'update delete %s. IN SSHFP\nshow\nsend\n' % hostname
for pubkey in pubkeys:
sshfp = pubkey.fingerprint_dns_sha1()
if sshfp is not None:
update_txt += 'update add %s. %s IN SSHFP %s\n' % (
hostname, ttl, sshfp)
sshfp = pubkey.fingerprint_dns_sha256()
if sshfp is not None:
update_txt += 'update add %s. %s IN SSHFP %s\n' % (
hostname, ttl, sshfp)
update_txt += 'show\nsend\n'
if not do_nsupdate(update_txt):
root_logger.warning("Could not update DNS SSHFP records.")
def print_port_conf_info():
root_logger.info(
"Please make sure the following ports are opened "
"in the firewall settings:\n"
" TCP: 80, 88, 389\n"
" UDP: 88 (at least one of TCP/UDP ports 88 has to be open)\n"
"Also note that following ports are necessary for ipa-client "
"working properly after enrollment:\n"
" TCP: 464\n"
" UDP: 464, 123 (if NTP enabled)")
def cert_summary(msg, certs, indent=' '):
if msg:
s = '%s\n' % msg
else:
s = ''
for cert in certs:
s += '%sSubject: %s\n' % (indent, DN(cert.subject))
s += '%sIssuer: %s\n' % (indent, DN(cert.issuer))
s += '%sValid From: %s\n' % (indent, cert.not_valid_before)
s += '%sValid Until: %s\n' % (indent, cert.not_valid_after)
s += '\n'
s = s[:-1]
return s
def get_certs_from_ldap(server, base_dn, realm, ca_enabled):
ldap_uri = ipaldap.get_ldap_uri(server)
conn = ipaldap.LDAPClient(ldap_uri, sasl_nocanon=True)
try:
conn.gssapi_bind()
certs = certstore.get_ca_certs(conn, base_dn, realm, ca_enabled)
except errors.NotFound:
raise errors.NoCertificateError(entry=server)
except errors.NetworkError as e:
raise errors.NetworkError(uri=conn.ldap_uri, error=str(e))
except Exception as e:
raise errors.LDAPError(str(e))
finally:
conn.unbind()
return certs
def get_ca_certs_from_file(url):
"""
Get the CA cert from a user supplied file and write it into the
paths.IPA_CA_CRT file.
Raises errors.NoCertificateError if unable to read cert.
Raises errors.FileError if unable to write cert.
"""
try:
parsed = urlparse(url, 'file')
except Exception:
raise errors.FileError(reason="unable to parse file url '%s'" % url)
if parsed.scheme != 'file':
raise errors.FileError(reason="url is not a file scheme '%s'" % url)
filename = parsed.path
if not os.path.exists(filename):
raise errors.FileError(reason="file '%s' does not exist" % filename)
if not os.path.isfile(filename):
raise errors.FileError(reason="file '%s' is not a file" % filename)
root_logger.debug("trying to retrieve CA cert from file %s", filename)
try:
certs = x509.load_certificate_list_from_file(filename)
except Exception:
raise errors.NoCertificateError(entry=filename)
return certs
def get_ca_certs_from_http(url, warn=True):
"""
Use HTTP to retrieve the CA cert and write it into the paths.IPA_CA_CRT
file. This is insecure and should be avoided.
Raises errors.NoCertificateError if unable to retrieve and write cert.
"""
if warn:
root_logger.warning("Downloading the CA certificate via HTTP, " +
"this is INSECURE")
root_logger.debug("trying to retrieve CA cert via HTTP from %s", url)
try:
result = run([paths.BIN_CURL, "-o", "-", url], capture_output=True)
except CalledProcessError:
raise errors.NoCertificateError(entry=url)
stdout = result.output
try:
certs = x509.load_certificate_list(stdout)
except Exception:
raise errors.NoCertificateError(entry=url)
return certs
def get_ca_certs_from_ldap(server, basedn, realm):
"""
Retrieve th CA cert from the LDAP server by binding to the
server with GSSAPI using the current Kerberos credentials.
Write the retrieved cert into the paths.IPA_CA_CRT file.
Raises errors.NoCertificateError if cert is not found.
Raises errors.NetworkError if LDAP connection can't be established.
Raises errors.LDAPError for any other generic LDAP error.
Raises errors.OnlyOneValueAllowed if more than one cert is found.
Raises errors.FileError if unable to write cert.
"""
root_logger.debug("trying to retrieve CA cert via LDAP from %s", server)
try:
certs = get_certs_from_ldap(server, basedn, realm, False)
except Exception as e:
root_logger.debug("get_ca_certs_from_ldap() error: %s", e)
raise
certs = [x509.load_certificate(c[0], x509.DER) for c in certs
if c[2] is not False]
return certs
def validate_new_ca_certs(existing_ca_certs, new_ca_certs, ask,
override=False):
if existing_ca_certs is None:
root_logger.info(
cert_summary("Successfully retrieved CA cert", new_ca_certs))
return
existing_ca_certs = set(existing_ca_certs)
new_ca_certs = set(new_ca_certs)
if existing_ca_certs > new_ca_certs:
root_logger.warning(
"The CA cert available from the IPA server does not match the\n"
"local certificate available at %s" % paths.IPA_CA_CRT)
root_logger.warning(
cert_summary("Existing CA cert:", existing_ca_certs))
root_logger.warning(
cert_summary("Retrieved CA cert:", new_ca_certs))
if override:
root_logger.warning("Overriding existing CA cert\n")
elif not ask or not user_input(
"Do you want to replace the local certificate with the CA\n"
"certificate retrieved from the IPA server?", True):
raise errors.CertificateInvalidError(name='Retrieved CA')
else:
root_logger.debug(
"Existing CA cert and Retrieved CA cert are identical")
def get_ca_certs(fstore, options, server, basedn, realm):
"""
Examine the different options and determine a method for obtaining
the CA cert.
If successful the CA cert will have been written into paths.IPA_CA_CRT.
Raises errors.NoCertificateError if not successful.
The logic for determining how to load the CA cert is as follow:
In the OTP case (not -p and -w):
1. load from user supplied cert file
2. else load from HTTP
In the 'user_auth' case ((-p and -w) or interactive):
1. load from user supplied cert file
2. load from LDAP using SASL/GSS/Krb5 auth
(provides mutual authentication, integrity and security)
3. if LDAP failed and interactive ask for permission to
use insecure HTTP (default: No)
In the unattended case:
1. load from user supplied cert file
2. load from HTTP if --force specified else fail
In all cases if HTTP is used emit warning message
"""
ca_file = paths.IPA_CA_CRT + ".new"
def ldap_url():
return urlunparse(('ldap', ipautil.format_netloc(server),
'', '', '', ''))
def file_url():
return urlunparse(('file', '', options.ca_cert_file,
'', '', ''))
def http_url():
return urlunparse(('http', ipautil.format_netloc(server),
'/ipa/config/ca.crt', '', '', ''))
interactive = not options.unattended
otp_auth = options.principal is None and options.password is not None
existing_ca_certs = None
ca_certs = None
if options.ca_cert_file:
url = file_url()
try:
ca_certs = get_ca_certs_from_file(url)
except errors.FileError as e:
root_logger.debug(e)
raise
except Exception as e:
root_logger.debug(e)
raise errors.NoCertificateError(entry=url)
root_logger.debug("CA cert provided by user, use it!")
else:
if os.path.exists(paths.IPA_CA_CRT):
if os.path.isfile(paths.IPA_CA_CRT):
try:
existing_ca_certs = x509.load_certificate_list_from_file(
paths.IPA_CA_CRT)
except Exception as e:
raise errors.FileError(
reason=u"Unable to load existing CA cert '%s': %s" %
(paths.IPA_CA_CRT, e))
else:
raise errors.FileError(reason=u"Existing ca cert '%s' is " +
"not a plain file" % (paths.IPA_CA_CRT))
if otp_auth:
if existing_ca_certs:
root_logger.info("OTP case, CA cert preexisted, use it")
else:
url = http_url()
override = not interactive
if interactive and not user_input(
"Do you want to download the CA cert from " + url + " ?\n"
"(this is INSECURE)", False
):
raise errors.NoCertificateError(
message=u"HTTP certificate download declined by user")
try:
ca_certs = get_ca_certs_from_http(url, override)
except Exception as e:
root_logger.debug(e)
raise errors.NoCertificateError(entry=url)
validate_new_ca_certs(existing_ca_certs, ca_certs, False,
override)
else:
# Auth with user credentials
try:
url = ldap_url()
ca_certs = get_ca_certs_from_ldap(server, basedn, realm)
validate_new_ca_certs(existing_ca_certs, ca_certs, interactive)
except errors.FileError as e:
root_logger.debug(e)
raise
except (errors.NoCertificateError, errors.LDAPError) as e:
root_logger.debug(str(e))
url = http_url()
if existing_ca_certs:
root_logger.warning(
"Unable to download CA cert from LDAP\n"
"but found preexisting cert, using it.\n")
elif interactive and not user_input(
"Unable to download CA cert from LDAP.\n"
"Do you want to download the CA cert from " + url + "?\n"
"(this is INSECURE)", False
):
raise errors.NoCertificateError(
message=u"HTTP "
"certificate download declined by user")
elif not interactive and not options.force:
root_logger.error(
"In unattended mode without a One Time Password "
"(OTP) or without --ca-cert-file\nYou must specify"
" --force to retrieve the CA cert using HTTP")
raise errors.NoCertificateError(
message=u"HTTP "
"certificate download requires --force")
else:
try:
ca_certs = get_ca_certs_from_http(url)
except Exception as e:
root_logger.debug(e)
raise errors.NoCertificateError(entry=url)
validate_new_ca_certs(existing_ca_certs, ca_certs,
interactive)
except Exception as e:
root_logger.debug(str(e))
raise errors.NoCertificateError(entry=url)
if ca_certs is None and existing_ca_certs is None:
raise errors.InternalError(u"expected CA cert file '%s' to "
u"exist, but it's absent" % (ca_file))
if ca_certs is not None:
try:
ca_certs = [
cert.public_bytes(serialization.Encoding.DER)
for cert in ca_certs
]
x509.write_certificate_list(ca_certs, ca_file)
except Exception as e:
if os.path.exists(ca_file):
try:
os.unlink(ca_file)
except OSError as e:
root_logger.error(
"Failed to remove '%s': %s", ca_file, e)
raise errors.FileError(
reason=u"cannot write certificate file '%s': %s" % (
ca_file, e)
)
os.rename(ca_file, paths.IPA_CA_CRT)
# Make sure the file permissions are correct
try:
os.chmod(paths.IPA_CA_CRT, 0o644)
except Exception as e:
raise errors.FileError(reason=u"Unable set permissions on ca "
u"cert '%s': %s" % (paths.IPA_CA_CRT, e))
# IMPORTANT: First line of FF config file is ignored
FIREFOX_CONFIG_TEMPLATE = """
/* Kerberos SSO configuration */
pref("network.negotiate-auth.trusted-uris", ".$DOMAIN");
/* These are the defaults */
pref("network.negotiate-auth.gsslib", "");
pref("network.negotiate-auth.using-native-gsslib", true);
pref("network.negotiate-auth.allow-proxies", true);
"""
FIREFOX_PREFERENCES_FILENAME = "all-ipa.js"
FIREFOX_PREFERENCES_REL_PATH = "browser/defaults/preferences"
def configure_firefox(options, statestore, domain):
try:
root_logger.debug("Setting up Firefox configuration.")
preferences_dir = None
# Check user specified location of firefox install directory
if options.firefox_dir is not None:
pref_path = os.path.join(options.firefox_dir,
FIREFOX_PREFERENCES_REL_PATH)
if dir_exists(pref_path):
preferences_dir = pref_path
else:
root_logger.error("Directory '%s' does not exists.", pref_path)
else:
# test if firefox is installed
if file_exists(paths.FIREFOX):
# find valid preferences path
for path in [paths.LIB_FIREFOX, paths.LIB64_FIREFOX]:
pref_path = os.path.join(path,
FIREFOX_PREFERENCES_REL_PATH)
if dir_exists(pref_path):
preferences_dir = pref_path
break
else:
root_logger.error(
"Firefox configuration skipped (Firefox not found).")
return
# setting up firefox
if preferences_dir is not None:
# user could specify relative path, we need to store absolute
preferences_dir = os.path.abspath(preferences_dir)
root_logger.debug(
"Firefox preferences directory found '%s'.", preferences_dir)
preferences_fname = os.path.join(
preferences_dir, FIREFOX_PREFERENCES_FILENAME)
update_txt = ipautil.template_str(
FIREFOX_CONFIG_TEMPLATE, dict(DOMAIN=domain))
root_logger.debug(
"Firefox trusted uris will be set as '.%s' domain.", domain)
root_logger.debug(
"Firefox configuration will be stored in '%s' file.",
preferences_fname)
try:
with open(preferences_fname, 'w') as f:
f.write(update_txt)
root_logger.info("Firefox sucessfully configured.")
statestore.backup_state(
'firefox', 'preferences_fname', preferences_fname)
except Exception as e:
root_logger.debug(
"An error occured during creating preferences file: %s.",
e)
root_logger.error("Firefox configuration failed.")
else:
root_logger.debug("Firefox preferences directory not found.")
root_logger.error("Firefox configuration failed.")
except Exception as e:
root_logger.debug(str(e))
root_logger.error("Firefox configuration failed.")
def purge_host_keytab(realm):
try:
ipautil.run([
paths.IPA_RMKEYTAB,
'-k', paths.KRB5_KEYTAB, '-r', realm
])
except CalledProcessError as e:
if e.returncode not in (3, 5):
# 3 - Unable to open keytab
# 5 - Principal name or realm not found in keytab
root_logger.error(
"Error trying to clean keytab: "
"/usr/sbin/ipa-rmkeytab returned %s", e.returncode)
else:
root_logger.info(
"Removed old keys for realm %s from %s",
realm, paths.KRB5_KEYTAB)
def install_check(options):
global hostname
global hostname_source
global nosssd_files
global dnsok
global cli_domain
global cli_server
global subject_base
global cli_realm
global cli_kdc
global client_domain
global cli_basedn
cli_domain_source = 'Unknown source'
cli_server_source = 'Unknown source'
fstore = sysrestore.FileStore(paths.IPA_CLIENT_SYSRESTORE)
if not os.getegid() == 0:
raise ScriptError(
"You must be root to run ipa-client-install.",
rval=CLIENT_INSTALL_ERROR)
tasks.check_selinux_status()
if is_ipa_client_installed(fstore, on_master=options.on_master):
root_logger.error("IPA client is already configured on this system.")
root_logger.info(
"If you want to reinstall the IPA client, uninstall it first " +
"using 'ipa-client-install --uninstall'.")
raise ScriptError(rval=CLIENT_ALREADY_CONFIGURED)
if options.conf_ntp and not options.on_master and not options.force_ntpd:
try:
ntpconf.check_timedate_services()
except ntpconf.NTPConflictingService as e:
print("WARNING: ntpd time&date synchronization service will not"
" be configured as")
print("conflicting service ({}) is enabled".format(
e.conflicting_service))
print("Use --force-ntpd option to disable it and force "
"configuration of ntpd")
print("")
# configuration of ntpd is disabled in this case
options.conf_ntp = False
except ntpconf.NTPConfigurationError:
pass
if options.unattended and (
options.password is None and
options.principal is None and
options.keytab is None and
options.prompt_password is False and
not options.on_master
):
raise ScriptError(
"One of password / principal / keytab is required.",
rval=CLIENT_INSTALL_ERROR)
if options.hostname:
hostname = options.hostname
hostname_source = 'Provided as option'
else:
hostname = socket.getfqdn()
hostname_source = "Machine's FQDN"
if hostname != hostname.lower():
raise ScriptError(
"Invalid hostname '{}', must be lower-case.".format(hostname),
rval=CLIENT_INSTALL_ERROR
)
if (hostname == 'localhost') or (hostname == 'localhost.localdomain'):
raise ScriptError(
"Invalid hostname, '{}' must not be used.".format(hostname),
rval=CLIENT_INSTALL_ERROR)
# when installing with '--no-sssd' option, check whether nss-ldap is
# installed
if not options.sssd:
if not os.path.exists(paths.PAM_KRB5_SO):
raise ScriptError(
"The pam_krb5 package must be installed",
rval=CLIENT_INSTALL_ERROR)
(nssldap_installed, nosssd_files) = nssldap_exists()
if not nssldap_installed:
raise ScriptError(
"One of these packages must be installed: nss_ldap or "
"nss-pam-ldapd",
rval=CLIENT_INSTALL_ERROR)
if options.keytab and options.principal:
raise ScriptError(
"Options 'principal' and 'keytab' cannot be used together.",
rval=CLIENT_INSTALL_ERROR)
if options.keytab and options.force_join:
root_logger.warning("Option 'force-join' has no additional effect "
"when used with together with option 'keytab'.")
# Check if old certificate exist and show warning
if (
not options.ca_cert_file and
get_cert_path(options.ca_cert_file) == paths.IPA_CA_CRT
):
root_logger.warning("Using existing certificate '%s'.",
paths.IPA_CA_CRT)
if not check_ip_addresses(options):
raise ScriptError(rval=CLIENT_INSTALL_ERROR)
# Create the discovery instance
ds = ipadiscovery.IPADiscovery()
ret = ds.search(
domain=options.domain,
servers=options.server,
realm=options.realm_name,
hostname=hostname,
ca_cert_path=get_cert_path(options.ca_cert_file)
)
if options.server and ret != 0:
# There is no point to continue with installation as server list was
# passed as a fixed list of server and thus we cannot discover any
# better result
root_logger.error(
"Failed to verify that %s is an IPA Server.",
', '.join(options.server))
root_logger.error(
"This may mean that the remote server is not up "
"or is not reachable due to network or firewall settings.")
print_port_conf_info()
raise ScriptError(rval=CLIENT_INSTALL_ERROR)
if ret == ipadiscovery.BAD_HOST_CONFIG:
root_logger.error("Can't get the fully qualified name of this host")
root_logger.info("Check that the client is properly configured")
raise ScriptError(rval=CLIENT_INSTALL_ERROR)
if ret == ipadiscovery.NOT_FQDN:
raise ScriptError(
"{} is not a fully-qualified hostname".format(hostname),
rval=CLIENT_INSTALL_ERROR)
if ret in (ipadiscovery.NO_LDAP_SERVER, ipadiscovery.NOT_IPA_SERVER) \
or not ds.domain:
if ret == ipadiscovery.NO_LDAP_SERVER:
if ds.server:
root_logger.debug("%s is not an LDAP server" % ds.server)
else:
root_logger.debug("No LDAP server found")
elif ret == ipadiscovery.NOT_IPA_SERVER:
if ds.server:
root_logger.debug("%s is not an IPA server" % ds.server)
else:
root_logger.debug("No IPA server found")
else:
root_logger.debug("Domain not found")
if options.domain:
cli_domain = options.domain
cli_domain_source = 'Provided as option'
elif options.unattended:
raise ScriptError(
"Unable to discover domain, not provided on command line",
rval=CLIENT_INSTALL_ERROR)
else:
root_logger.info(
"DNS discovery failed to determine your DNS domain")
cli_domain = user_input(
"Provide the domain name of your IPA server (ex: example.com)",
allow_empty=False)
cli_domain_source = 'Provided interactively'
root_logger.debug(
"will use interactively provided domain: %s", cli_domain)
ret = ds.search(
domain=cli_domain,
servers=options.server,
hostname=hostname,
ca_cert_path=get_cert_path(options.ca_cert_file))
if not cli_domain:
if ds.domain:
cli_domain = ds.domain
cli_domain_source = ds.domain_source
root_logger.debug("will use discovered domain: %s", cli_domain)
client_domain = hostname[hostname.find(".")+1:]
if ret in (ipadiscovery.NO_LDAP_SERVER, ipadiscovery.NOT_IPA_SERVER) \
or not ds.server:
root_logger.debug("IPA Server not found")
if options.server:
cli_server = options.server
cli_server_source = 'Provided as option'
elif options.unattended:
raise ScriptError(
"Unable to find IPA Server to join",
rval=CLIENT_INSTALL_ERROR)
else:
root_logger.debug("DNS discovery failed to find the IPA Server")
cli_server = [
user_input(
"Provide your IPA server name (ex: ipa.example.com)",
allow_empty=False)
]
cli_server_source = 'Provided interactively'
root_logger.debug(
"will use interactively provided server: %s", cli_server[0])
ret = ds.search(
domain=cli_domain,
servers=cli_server,
hostname=hostname,
ca_cert_path=get_cert_path(options.ca_cert_file))
else:
# Only set dnsok to True if we were not passed in one or more servers
# and if DNS discovery actually worked.
if not options.server:
(server, domain) = ds.check_domain(
ds.domain, set(), "Validating DNS Discovery")
if server and domain:
root_logger.debug("DNS validated, enabling discovery")
dnsok = True
else:
root_logger.debug("DNS discovery failed, disabling discovery")
else:
root_logger.debug(
"Using servers from command line, disabling DNS discovery")
if not cli_server:
if options.server:
cli_server = ds.servers
cli_server_source = 'Provided as option'
root_logger.debug(
"will use provided server: %s", ', '.join(options.server))
elif ds.server:
cli_server = ds.servers
cli_server_source = ds.server_source
root_logger.debug("will use discovered server: %s", cli_server[0])
if ret == ipadiscovery.NOT_IPA_SERVER:
root_logger.error("%s is not an IPA v2 Server.", cli_server[0])
print_port_conf_info()
root_logger.debug("(%s: %s)", cli_server[0], cli_server_source)
raise ScriptError(rval=CLIENT_INSTALL_ERROR)
if ret == ipadiscovery.NO_ACCESS_TO_LDAP:
root_logger.warning("Anonymous access to the LDAP server is disabled.")
root_logger.info("Proceeding without strict verification.")
root_logger.info(
"Note: This is not an error if anonymous access "
"has been explicitly restricted.")
ret = 0
if ret == ipadiscovery.NO_TLS_LDAP:
root_logger.warning(
"The LDAP server requires TLS is but we do not have the CA.")
root_logger.info("Proceeding without strict verification.")
ret = 0
if ret != 0:
root_logger.error(
"Failed to verify that %s is an IPA Server.",
cli_server[0])
root_logger.error(
"This may mean that the remote server is not up "
"or is not reachable due to network or firewall settings.")
print_port_conf_info()
root_logger.debug("(%s: %s)", cli_server[0], cli_server_source)
raise ScriptError(rval=CLIENT_INSTALL_ERROR)
cli_kdc = ds.kdc
if dnsok and not cli_kdc:
root_logger.error(
"DNS domain '%s' is not configured for automatic "
"KDC address lookup.", ds.realm.lower())
root_logger.debug("(%s: %s)", ds.realm, ds.realm_source)
root_logger.error("KDC address will be set to fixed value.")
if dnsok:
root_logger.info("Discovery was successful!")
elif not options.unattended:
if not options.server:
root_logger.warning(
"The failure to use DNS to find your IPA "
"server indicates that your resolv.conf file is not properly "
"configured.")
root_logger.info(
"Autodiscovery of servers for failover cannot work "
"with this configuration.")
root_logger.info(
"If you proceed with the installation, services "
"will be configured to always access the discovered server for "
"all operations and will not fail over to other servers in case "
"of failure.")
if not user_input(
"Proceed with fixed values and no DNS discovery?", False):
raise ScriptError(rval=CLIENT_INSTALL_ERROR)
cli_realm = ds.realm
cli_realm_source = ds.realm_source
root_logger.debug("will use discovered realm: %s", cli_realm)
if options.realm_name and options.realm_name != cli_realm:
root_logger.error(
"The provided realm name [%s] does not match discovered one [%s]",
options.realm_name, cli_realm)
root_logger.debug("(%s: %s)", cli_realm, cli_realm_source)
raise ScriptError(rval=CLIENT_INSTALL_ERROR)
cli_basedn = ds.basedn
cli_basedn_source = ds.basedn_source
root_logger.debug("will use discovered basedn: %s", cli_basedn)
subject_base = DN(('O', cli_realm))
root_logger.info("Client hostname: %s", hostname)
root_logger.debug("Hostname source: %s", hostname_source)
root_logger.info("Realm: %s", cli_realm)
root_logger.debug("Realm source: %s", cli_realm_source)
root_logger.info("DNS Domain: %s", cli_domain)
root_logger.debug("DNS Domain source: %s", cli_domain_source)
root_logger.info("IPA Server: %s", ', '.join(cli_server))
root_logger.debug("IPA Server source: %s", cli_server_source)
root_logger.info("BaseDN: %s", cli_basedn)
root_logger.debug("BaseDN source: %s", cli_basedn_source)
# ipa-join would fail with IP address instead of a FQDN
for srv in cli_server:
try:
socket.inet_pton(socket.AF_INET, srv)
is_ipaddr = True
except socket.error:
try:
socket.inet_pton(socket.AF_INET6, srv)
is_ipaddr = True
except socket.error:
is_ipaddr = False
if is_ipaddr:
print()
root_logger.warning(
"It seems that you are using an IP address "
"instead of FQDN as an argument to --server. The "
"installation may fail.")
break
print()
if not options.unattended and not user_input(
"Continue to configure the system with these values?", False):
raise ScriptError(rval=CLIENT_INSTALL_ERROR)
def create_ipa_nssdb():
db = certdb.NSSDatabase(paths.IPA_NSSDB_DIR)
db.create_db(mode=0o755, backup=True)
os.chmod(db.pwd_file, 0o600)
os.chmod(os.path.join(db.secdir, 'cert8.db'), 0o644)
os.chmod(os.path.join(db.secdir, 'key3.db'), 0o644)
os.chmod(os.path.join(db.secdir, 'secmod.db'), 0o644)
def update_ipa_nssdb():
ipa_db = certdb.NSSDatabase(paths.IPA_NSSDB_DIR)
sys_db = certdb.NSSDatabase(paths.NSS_DB_DIR)
if not os.path.exists(os.path.join(ipa_db.secdir, 'cert8.db')):
create_ipa_nssdb()
for nickname, trust_flags in (
('IPA CA', certdb.IPA_CA_TRUST_FLAGS),
('External CA cert', certdb.EXTERNAL_CA_TRUST_FLAGS)):
try:
cert = sys_db.get_cert(nickname)
except RuntimeError:
continue
try:
ipa_db.add_cert(cert, nickname, trust_flags)
except ipautil.CalledProcessError as e:
raise RuntimeError("Failed to add %s to %s: %s" %
(nickname, ipa_db.secdir, e))
# Remove IPA certs from /etc/pki/nssdb
for nickname, trust_flags in ipa_db.list_certs():
while sys_db.has_nickname(nickname):
try:
sys_db.delete_cert(nickname)
except ipautil.CalledProcessError as e:
raise RuntimeError("Failed to remove %s from %s: %s" %
(nickname, sys_db.secdir, e))
def install(options):
try:
_install(options)
except ScriptError as e:
if e.rval == CLIENT_INSTALL_ERROR:
if options.force:
root_logger.warning(
"Installation failed. Force set so not rolling back "
"changes.")
elif options.on_master:
root_logger.warning(
"Installation failed. As this is IPA server, changes will "
"not be rolled back.")
else:
root_logger.error("Installation failed. Rolling back changes.")
options.unattended = True
try:
uninstall(options)
except Exception as ex:
root_logger.debug(traceback.format_exc())
root_logger.error(ex)
raise
finally:
try:
os.remove(CCACHE_FILE)
except Exception:
pass
def _install(options):
env = {'PATH': SECURE_PATH}
fstore = sysrestore.FileStore(paths.IPA_CLIENT_SYSRESTORE)
statestore = sysrestore.StateFile(paths.IPA_CLIENT_SYSRESTORE)
if not options.on_master:
# Try removing old principals from the keytab
purge_host_keytab(cli_realm)
if options.hostname and not options.on_master:
# skip this step when run by ipa-server-install as it always configures
# hostname
tasks.backup_hostname(fstore, statestore)
tasks.set_hostname(options.hostname)
ntp_srv_servers = []
if not options.on_master and options.conf_ntp:
# Attempt to sync time with IPA server.
# If we're skipping NTP configuration, we also skip the time sync here.
# We assume that NTP servers are discoverable through SRV records
# in the DNS.
# If that fails, we try to sync directly with IPA server,
# assuming it runs NTP
root_logger.info('Synchronizing time with KDC...')
ds = ipadiscovery.IPADiscovery()
ntp_srv_servers = ds.ipadns_search_srv(cli_domain, '_ntp._udp',
None, break_on_first=False)
synced_ntp = False
ntp_servers = ntp_srv_servers
# use user specified NTP servers if there are any
if options.ntp_servers:
ntp_servers = options.ntp_servers
for s in ntp_servers:
synced_ntp = ntpconf.synconce_ntp(s, options.debug)
if synced_ntp:
break
if not synced_ntp and not options.ntp_servers:
synced_ntp = ntpconf.synconce_ntp(cli_server[0], options.debug)
if not synced_ntp:
root_logger.warning(
"Unable to sync time with NTP "
"server, assuming the time is in sync. Please check "
"that 123 UDP port is opened.")
else:
root_logger.info('Skipping synchronizing time with NTP server.')
if not options.unattended:
if (options.principal is None and options.password is None and
options.prompt_password is False and options.keytab is None):
options.principal = user_input("User authorized to enroll "
"computers", allow_empty=False)
root_logger.debug(
"will use principal provided as option: %s", options.principal)
host_principal = 'host/%s@%s' % (hostname, cli_realm)
if not options.on_master:
nolog = tuple()
# First test out the kerberos configuration
try:
(krb_fd, krb_name) = tempfile.mkstemp()
os.close(krb_fd)
configure_krb5_conf(
cli_realm=cli_realm,
cli_domain=cli_domain,
cli_server=cli_server,
cli_kdc=cli_kdc,
dnsok=False,
filename=krb_name,
client_domain=client_domain,
client_hostname=hostname,
configure_sssd=options.sssd,
force=options.force)
env['KRB5_CONFIG'] = krb_name
ccache_dir = tempfile.mkdtemp(prefix='krbcc')
ccache_name = os.path.join(ccache_dir, 'ccache')
join_args = [paths.SBIN_IPA_JOIN,
"-s", cli_server[0],
"-b", str(realm_to_suffix(cli_realm)),
"-h", hostname]
if options.debug:
join_args.append("-d")
env['XMLRPC_TRACE_CURL'] = 'yes'
if options.force_join:
join_args.append("-f")
if options.principal is not None:
stdin = None
principal = options.principal
if principal.find('@') == -1:
principal = '%s@%s' % (principal, cli_realm)
if options.password is not None:
stdin = options.password
else:
if not options.unattended:
try:
stdin = getpass.getpass(
"Password for %s: " % principal)
except EOFError:
stdin = None
if not stdin:
raise ScriptError(
"Password must be provided for {}.".format(
principal),
rval=CLIENT_INSTALL_ERROR)
else:
if sys.stdin.isatty():
root_logger.error(
"Password must be provided in "
"non-interactive mode.")
root_logger.info(
"This can be done via "
"echo password | ipa-client-install ... "
"or with the -w option.")
raise ScriptError(rval=CLIENT_INSTALL_ERROR)
else:
stdin = sys.stdin.readline()
try:
kinit_password(principal, stdin, ccache_name,
config=krb_name)
except RuntimeError as e:
print_port_conf_info()
raise ScriptError(
"Kerberos authentication failed: {}".format(e),
rval=CLIENT_INSTALL_ERROR)
elif options.keytab:
join_args.append("-f")
if os.path.exists(options.keytab):
try:
kinit_keytab(host_principal,
options.keytab,
ccache_name,
config=krb_name,
attempts=options.kinit_attempts)
except gssapi.exceptions.GSSError as e:
print_port_conf_info()
raise ScriptError(
"Kerberos authentication failed: {}".format(e),
rval=CLIENT_INSTALL_ERROR)
else:
raise ScriptError(
"Keytab file could not be found: {}".format(
options.keytab),
rval=CLIENT_INSTALL_ERROR)
elif options.password:
nolog = (options.password,)
join_args.append("-w")
join_args.append(options.password)
elif options.prompt_password:
if options.unattended:
raise ScriptError(
"Password must be provided in non-interactive mode",
rval=CLIENT_INSTALL_ERROR)
try:
password = getpass.getpass("Password: ")
except EOFError:
password = None
if not password:
raise ScriptError(
"Password must be provided.",
rval=CLIENT_INSTALL_ERROR)
join_args.append("-w")
join_args.append(password)
nolog = (password,)
env['KRB5CCNAME'] = os.environ['KRB5CCNAME'] = ccache_name
# Get the CA certificate
try:
os.environ['KRB5_CONFIG'] = env['KRB5_CONFIG']
get_ca_certs(fstore, options, cli_server[0], cli_basedn,
cli_realm)
del os.environ['KRB5_CONFIG']
except errors.FileError as e:
root_logger.error(e)
raise ScriptError(rval=CLIENT_INSTALL_ERROR)
except Exception as e:
root_logger.error("Cannot obtain CA certificate\n%s", e)
raise ScriptError(rval=CLIENT_INSTALL_ERROR)
# Now join the domain
result = run(
join_args, raiseonerr=False, env=env, nolog=nolog,
capture_error=True)
stderr = result.error_output
if result.returncode != 0:
root_logger.error("Joining realm failed: %s", stderr)
if not options.force:
if result.returncode == 13:
root_logger.info(
"Use --force-join option to override the host "
"entry on the server and force client enrollment.")
raise ScriptError(rval=CLIENT_INSTALL_ERROR)
root_logger.info(
"Use ipa-getkeytab to obtain a host "
"principal for this server.")
else:
root_logger.info("Enrolled in IPA realm %s", cli_realm)
start = stderr.find('Certificate subject base is: ')
if start >= 0:
start = start + 29
subject_base = stderr[start:]
subject_base = subject_base.strip()
subject_base = DN(subject_base)
if options.principal is not None:
run(["kdestroy"], raiseonerr=False, env=env)
# Obtain the TGT. We do it with the temporary krb5.conf, so that
# only the KDC we're installing under is contacted.
# Other KDCs might not have replicated the principal yet.
# Once we have the TGT, it's usable on any server.
try:
kinit_keytab(host_principal, paths.KRB5_KEYTAB, CCACHE_FILE,
config=krb_name,
attempts=options.kinit_attempts)
env['KRB5CCNAME'] = os.environ['KRB5CCNAME'] = CCACHE_FILE
except gssapi.exceptions.GSSError as e:
print_port_conf_info()
root_logger.error("Failed to obtain host TGT: %s" % e)
# failure to get ticket makes it impossible to login and bind
# from sssd to LDAP, abort installation and rollback changes
raise ScriptError(rval=CLIENT_INSTALL_ERROR)
finally:
try:
os.remove(krb_name)
except OSError:
root_logger.error("Could not remove %s", krb_name)
try:
os.rmdir(ccache_dir)
except OSError:
pass
try:
os.remove(krb_name + ".ipabkp")
except OSError:
root_logger.error("Could not remove %s.ipabkp", krb_name)
# Configure ipa.conf
if not options.on_master:
configure_ipa_conf(fstore, cli_basedn, cli_realm, cli_domain,
cli_server, hostname)
root_logger.info("Created /etc/ipa/default.conf")
with certdb.NSSDatabase() as tmp_db:
api.bootstrap(context='cli_installer',
confdir=paths.ETC_IPA,
debug=options.debug,
delegate=False,
nss_dir=tmp_db.secdir)
if 'config_loaded' not in api.env:
raise ScriptError(
"Failed to initialize IPA API.",
rval=CLIENT_INSTALL_ERROR)
# Always back up sssd.conf. It gets updated by authconfig --enablekrb5.
fstore.backup_file(paths.SSSD_CONF)
if options.sssd:
if configure_sssd_conf(fstore, cli_realm, cli_domain, cli_server,
options, client_domain, hostname):
raise ScriptError(rval=CLIENT_INSTALL_ERROR)
root_logger.info("Configured /etc/sssd/sssd.conf")
if options.on_master:
# If on master assume kerberos is already configured properly.
# Get the host TGT.
try:
kinit_keytab(host_principal, paths.KRB5_KEYTAB, CCACHE_FILE,
attempts=options.kinit_attempts)
os.environ['KRB5CCNAME'] = CCACHE_FILE
except gssapi.exceptions.GSSError as e:
root_logger.error("Failed to obtain host TGT: %s" % e)
raise ScriptError(rval=CLIENT_INSTALL_ERROR)
else:
# Configure krb5.conf
fstore.backup_file(paths.KRB5_CONF)
configure_krb5_conf(
cli_realm=cli_realm,
cli_domain=cli_domain,
cli_server=cli_server,
cli_kdc=cli_kdc,
dnsok=dnsok,
filename=paths.KRB5_CONF,
client_domain=client_domain,
client_hostname=hostname,
configure_sssd=options.sssd,
force=options.force)
root_logger.info(
"Configured /etc/krb5.conf for IPA realm %s", cli_realm)
# Clear out any current session keyring information
try:
delete_persistent_client_session_data(host_principal)
except ValueError:
pass
# Add CA certs to a temporary NSS database
ca_certs = x509.load_certificate_list_from_file(paths.IPA_CA_CRT)
ca_certs = [
cert.public_bytes(serialization.Encoding.DER)
for cert in ca_certs
]
try:
tmp_db.create_db()
for i, cert in enumerate(ca_certs):
tmp_db.add_cert(cert,
'CA certificate %d' % (i + 1),
certdb.EXTERNAL_CA_TRUST_FLAGS)
except CalledProcessError:
raise ScriptError(
"Failed to add CA to temporary NSS database.",
rval=CLIENT_INSTALL_ERROR)
api.finalize()
# Now, let's try to connect to the server's RPC interface
connected = False
try:
api.Backend.rpcclient.connect()
connected = True
root_logger.debug("Try RPC connection")
api.Backend.rpcclient.forward('ping')
except errors.KerberosError as e:
if connected:
api.Backend.rpcclient.disconnect()
root_logger.info(
"Cannot connect to the server due to Kerberos error: %s. "
"Trying with delegate=True", e)
try:
api.Backend.rpcclient.connect(delegate=True)
root_logger.debug("Try RPC connection")
api.Backend.rpcclient.forward('ping')
root_logger.info("Connection with delegate=True successful")
# The remote server is not capable of Kerberos S4U2Proxy
# delegation. This features is implemented in IPA server
# version 2.2 and higher
root_logger.warning(
"Target IPA server has a lower version than the enrolled "
"client")
root_logger.warning(
"Some capabilities including the ipa command capability "
"may not be available")
except errors.PublicError as e2:
root_logger.warning(
"Second connect with delegate=True also failed: %s", e2)
raise ScriptError(
"Cannot connect to the IPA server RPC interface: %s" % e2,
rval=CLIENT_INSTALL_ERROR)
except errors.PublicError as e:
raise ScriptError(
"Cannot connect to the server due to generic error: %s" % e,
rval=CLIENT_INSTALL_ERROR)
# Use the RPC directly so older servers are supported
try:
result = api.Backend.rpcclient.forward(
'ca_is_enabled',
version=u'2.107',
)
ca_enabled = result['result']
except (errors.CommandError, errors.NetworkError):
result = api.Backend.rpcclient.forward(
'env',
server=True,
version=u'2.0',
)
ca_enabled = result['result']['enable_ra']
if not ca_enabled:
disable_ra()
# Create IPA NSS database
try:
create_ipa_nssdb()
except ipautil.CalledProcessError as e:
raise ScriptError(
"Failed to create IPA NSS database: %s" % e,
rval=CLIENT_INSTALL_ERROR)
# Get CA certificates from the certificate store
try:
ca_certs = get_certs_from_ldap(cli_server[0], cli_basedn, cli_realm,
ca_enabled)
except errors.NoCertificateError:
if ca_enabled:
ca_subject = DN(('CN', 'Certificate Authority'), subject_base)
else:
ca_subject = None
ca_certs = certstore.make_compat_ca_certs(ca_certs, cli_realm,
ca_subject)
ca_certs_trust = [(c, n, certstore.key_policy_to_trust_flags(t, True, u))
for (c, n, t, u) in ca_certs]
x509.write_certificate_list(
[c for c, n, t, u in ca_certs if t is not False],
paths.KDC_CA_BUNDLE_PEM)
x509.write_certificate_list(
[c for c, n, t, u in ca_certs if t is not False],
paths.CA_BUNDLE_PEM)
# Add the CA certificates to the IPA NSS database
root_logger.debug("Adding CA certificates to the IPA NSS database.")
ipa_db = certdb.NSSDatabase(paths.IPA_NSSDB_DIR)
for cert, nickname, trust_flags in ca_certs_trust:
try:
ipa_db.add_cert(cert, nickname, trust_flags)
except CalledProcessError as e:
raise ScriptError(
"Failed to add %s to the IPA NSS database." % nickname,
rval=CLIENT_INSTALL_ERROR)
# Add the CA certificates to the platform-dependant systemwide CA store
tasks.insert_ca_certs_into_systemwide_ca_store(ca_certs)
if not options.on_master:
client_dns(cli_server[0], hostname, options)
configure_certmonger(fstore, subject_base, cli_realm, hostname,
options, ca_enabled)
update_ssh_keys(hostname, paths.SSH_CONFIG_DIR, options.create_sshfp)
try:
os.remove(CCACHE_FILE)
except Exception:
pass
# Name Server Caching Daemon. Disable for SSSD, use otherwise
# (if installed)
nscd = services.knownservices.nscd
if nscd.is_installed():
save_state(nscd, statestore)
try:
if options.sssd:
nscd_service_action = 'stop'
nscd.stop()
else:
nscd_service_action = 'restart'
nscd.restart()
except Exception:
root_logger.warning(
"Failed to %s the %s daemon",
nscd_service_action, nscd.service_name)
if not options.sssd:
root_logger.warning(
"Caching of users/groups will not be available")
try:
if options.sssd:
nscd.disable()
else:
nscd.enable()
except Exception:
if not options.sssd:
root_logger.warning(
"Failed to configure automatic startup of the %s daemon",
nscd.service_name)
root_logger.info(
"Caching of users/groups will not be "
"available after reboot")
else:
root_logger.warning(
"Failed to disable %s daemon. Disable it manually.",
nscd.service_name)
else:
# this is optional service, just log
if not options.sssd:
root_logger.info(
"%s daemon is not installed, skip configuration",
nscd.service_name)
nslcd = services.knownservices.nslcd
if nslcd.is_installed():
save_state(nslcd, statestore)
retcode, conf = (0, None)
if not options.no_ac:
# Modify nsswitch/pam stack
tasks.modify_nsswitch_pam_stack(sssd=options.sssd,
mkhomedir=options.mkhomedir,
statestore=statestore)
root_logger.info("%s enabled", "SSSD" if options.sssd else "LDAP")
if options.sssd:
sssd = services.service('sssd', api)
try:
sssd.restart()
except CalledProcessError:
root_logger.warning("SSSD service restart was unsuccessful.")
try:
sssd.enable()
except CalledProcessError as e:
root_logger.warning(
"Failed to enable automatic startup of the SSSD daemon: "
"%s", e)
if not options.sssd:
tasks.modify_pam_to_use_krb5(statestore)
root_logger.info("Kerberos 5 enabled")
# Update non-SSSD LDAP configuration after authconfig calls as it would
# change its configuration otherways
if not options.sssd:
for configurer in [configure_ldap_conf, configure_nslcd_conf]:
(retcode, conf, filenames) = configurer(
fstore, cli_basedn, cli_realm,
cli_domain, cli_server, dnsok,
options, nosssd_files[configurer.__name__])
if retcode:
raise ScriptError(rval=CLIENT_INSTALL_ERROR)
if conf:
root_logger.info(
"%s configured using configuration file(s) %s",
conf, filenames)
if configure_openldap_conf(fstore, cli_basedn, cli_server):
root_logger.info("Configured /etc/openldap/ldap.conf")
else:
root_logger.info("Failed to configure /etc/openldap/ldap.conf")
# Check that nss is working properly
if not options.on_master:
user = options.principal
if user is None:
user = "admin@%s" % cli_domain
root_logger.info("Principal is not set when enrolling with OTP"
"; using principal '%s' for 'getent passwd'",
user)
elif '@' not in user:
user = "%s@%s" % (user, cli_domain)
n = 0
found = False
# Loop for up to 10 seconds to see if nss is working properly.
# It can sometimes take a few seconds to connect to the remote
# provider.
# Particulary, SSSD might take longer than 6-8 seconds.
while n < 10 and not found:
try:
ipautil.run(["getent", "passwd", user])
found = True
except Exception as e:
time.sleep(1)
n = n + 1
if not found:
root_logger.error("Unable to find '%s' user with 'getent "
"passwd %s'!" % (user.split("@")[0], user))
if conf:
root_logger.info("Recognized configuration: %s", conf)
else:
root_logger.error(
"Unable to reliably detect "
"configuration. Check NSS setup manually.")
try:
hardcode_ldap_server(cli_server)
except Exception as e:
root_logger.error(
"Adding hardcoded server name to "
"/etc/ldap.conf failed: %s", str(e))
if options.conf_ntp and not options.on_master:
# disable other time&date services first
if options.force_ntpd:
ntpconf.force_ntpd(statestore)
if options.ntp_servers:
ntp_servers = options.ntp_servers
elif ntp_srv_servers:
ntp_servers = ntp_srv_servers
else:
root_logger.warning("No SRV records of NTP servers found. IPA "
"server address will be used")
ntp_servers = cli_server
ntpconf.config_ntp(ntp_servers, fstore, statestore)
root_logger.info("NTP enabled")
if options.conf_ssh:
configure_ssh_config(fstore, options)
if options.conf_sshd:
configure_sshd_config(fstore, options)
if options.location:
configure_automount(options)
if options.configure_firefox:
configure_firefox(options, statestore, cli_domain)
if not options.no_nisdomain:
configure_nisdomain(
options=options, domain=cli_domain, statestore=statestore)
root_logger.info('Client configuration complete.')
def uninstall_check(options):
fstore = sysrestore.FileStore(paths.IPA_CLIENT_SYSRESTORE)
if not is_ipa_client_installed(fstore):
raise ScriptError(
"IPA client is not configured on this system.",
rval=CLIENT_NOT_CONFIGURED)
server_fstore = sysrestore.FileStore(paths.SYSRESTORE)
if server_fstore.has_files() and not options.on_master:
root_logger.error(
"IPA client is configured as a part of IPA server on this system.")
root_logger.info("Refer to ipa-server-install for uninstallation.")
raise ScriptError(rval=CLIENT_NOT_CONFIGURED)
def uninstall(options):
env = {'PATH': SECURE_PATH}
fstore = sysrestore.FileStore(paths.IPA_CLIENT_SYSRESTORE)
statestore = sysrestore.StateFile(paths.IPA_CLIENT_SYSRESTORE)
try:
run(["ipa-client-automount", "--uninstall", "--debug"])
except Exception as e:
root_logger.error(
"Unconfigured automount client failed: %s", str(e))
# Reload the state as automount unconfigure may have modified it
fstore._load()
statestore._load()
hostname = None
ipa_domain = None
was_sssd_configured = False
try:
sssdconfig = SSSDConfig.SSSDConfig()
sssdconfig.import_config()
domains = sssdconfig.list_active_domains()
all_domains = sssdconfig.list_domains()
# we consider all the domains, because handling sssd.conf
# during uninstall is dependant on was_sssd_configured flag
# so the user does not lose info about inactive domains
if len(all_domains) > 1:
# There was more than IPA domain configured
was_sssd_configured = True
for name in domains:
domain = sssdconfig.get_domain(name)
try:
provider = domain.get_option('id_provider')
except SSSDConfig.NoOptionError:
continue
if provider == "ipa":
try:
hostname = domain.get_option('ipa_hostname')
except SSSDConfig.NoOptionError:
continue
try:
ipa_domain = domain.get_option('ipa_domain')
except SSSDConfig.NoOptionError:
pass
except Exception as e:
# We were unable to read existing SSSD config. This might mean few
# things:
# - sssd wasn't installed
# - sssd was removed after install and before uninstall
# - there are no active domains
# in both cases we cannot continue with SSSD
pass
if hostname is None:
hostname = socket.getfqdn()
ipa_db = certdb.NSSDatabase(paths.IPA_NSSDB_DIR)
sys_db = certdb.NSSDatabase(paths.NSS_DB_DIR)
cmonger = services.knownservices.certmonger
if ipa_db.has_nickname('Local IPA host'):
try:
certmonger.stop_tracking(paths.IPA_NSSDB_DIR,
nickname='Local IPA host')
except RuntimeError as e:
root_logger.error("%s failed to stop tracking certificate: %s",
cmonger.service_name, e)
client_nss_nickname = 'IPA Machine Certificate - %s' % hostname
if sys_db.has_nickname(client_nss_nickname):
try:
certmonger.stop_tracking(paths.NSS_DB_DIR,
nickname=client_nss_nickname)
except RuntimeError as e:
root_logger.error("%s failed to stop tracking certificate: %s",
cmonger.service_name, e)
for filename in (os.path.join(ipa_db.secdir, 'cert8.db'),
os.path.join(ipa_db.secdir, 'key3.db'),
os.path.join(ipa_db.secdir, 'secmod.db'),
os.path.join(ipa_db.secdir, 'pwdfile.txt')):
remove_file(filename)
# Remove any special principal names we added to the IPA CA helper
certmonger.remove_principal_from_cas()
try:
cmonger.stop()
except Exception as e:
log_service_error(cmonger.service_name, 'stop', e)
try:
cmonger.disable()
except Exception as e:
root_logger.error(
"Failed to disable automatic startup of the %s service: %s",
cmonger.service_name, str(e))
if not options.on_master and os.path.exists(paths.IPA_DEFAULT_CONF):
root_logger.info("Unenrolling client from IPA server")
join_args = [paths.SBIN_IPA_JOIN, "--unenroll", "-h", hostname]
if options.debug:
join_args.append("-d")
env['XMLRPC_TRACE_CURL'] = 'yes'
result = run(join_args, raiseonerr=False, env=env)
if result.returncode != 0:
root_logger.error("Unenrolling host failed: %s", result.error_log)
if os.path.exists(paths.IPA_DEFAULT_CONF):
root_logger.info(
"Removing Kerberos service principals from /etc/krb5.keytab")
try:
parser = RawConfigParser()
fp = open(paths.IPA_DEFAULT_CONF, 'r')
parser.readfp(fp)
fp.close()
realm = parser.get('global', 'realm')
run([paths.IPA_RMKEYTAB, "-k", paths.KRB5_KEYTAB, "-r", realm])
except CalledProcessError as err:
if err.returncode != 5:
# 5 means Principal name or realm not found in keytab
# and can be ignored
root_logger.error(
"Failed to remove Kerberos service principals: %s",
str(err))
except Exception as e:
root_logger.error(
"Failed to remove Kerberos service principals: %s", str(e))
root_logger.info("Disabling client Kerberos and LDAP configurations")
was_sssd_installed = False
was_sshd_configured = False
if fstore.has_files():
was_sssd_installed = fstore.has_file(paths.SSSD_CONF)
was_sshd_configured = fstore.has_file(paths.SSHD_CONFIG)
try:
tasks.restore_pre_ipa_client_configuration(fstore,
statestore,
was_sssd_installed,
was_sssd_configured)
except Exception as e:
raise ScriptError(
"Failed to remove krb5/LDAP configuration: {}".format(e),
rval=CLIENT_INSTALL_ERROR)
# Clean up the SSSD cache before SSSD service is stopped or restarted
remove_file(paths.SSSD_MC_GROUP)
remove_file(paths.SSSD_MC_PASSWD)
if ipa_domain:
sssd_domain_ldb = "cache_" + ipa_domain + ".ldb"
sssd_ldb_file = os.path.join(paths.SSSD_DB, sssd_domain_ldb)
remove_file(sssd_ldb_file)
sssd_domain_ccache = "ccache_" + ipa_domain.upper()
sssd_ccache_file = os.path.join(paths.SSSD_DB, sssd_domain_ccache)
remove_file(sssd_ccache_file)
# Next if-elif-elif construction deals with sssd.conf file.
# Old pre-IPA domains are preserved due merging the old sssd.conf
# during the installation of ipa-client but any new domains are
# only present in sssd.conf now, so we don't want to delete them
# by rewriting sssd.conf file. IPA domain is removed gracefully.
# SSSD was installed before our installation and other non-IPA domains
# found, restore backed up sssd.conf to sssd.conf.bkp and remove IPA
# domain from the current sssd.conf
if was_sssd_installed and was_sssd_configured:
root_logger.info(
"The original configuration of SSSD included other domains than "
"the IPA-based one.")
delete_ipa_domain()
restored = False
try:
restored = fstore.restore_file(
paths.SSSD_CONF, paths.SSSD_CONF_BKP)
except OSError:
root_logger.debug(
"Error while restoring pre-IPA /etc/sssd/sssd.conf.")
if restored:
root_logger.info(
"Original pre-IPA SSSD configuration file was "
"restored to /etc/sssd/sssd.conf.bkp.")
root_logger.info(
"IPA domain removed from current one, restarting SSSD service")
sssd = services.service('sssd', api)
try:
sssd.restart()
except CalledProcessError:
root_logger.warning("SSSD service restart was unsuccessful.")
# SSSD was not installed before our installation, but other domains found,
# delete IPA domain, but leave other domains intact
elif not was_sssd_installed and was_sssd_configured:
delete_ipa_domain()
root_logger.info(
"Other domains than IPA domain found, IPA domain was removed "
"from /etc/sssd/sssd.conf.")
sssd = services.service('sssd', api)
try:
sssd.restart()
except CalledProcessError:
root_logger.warning("SSSD service restart was unsuccessful.")
# SSSD was not installed before our installation, and no other domains
# than IPA are configured in sssd.conf - make sure config file is removed
elif not was_sssd_installed and not was_sssd_configured:
try:
os.rename(paths.SSSD_CONF, paths.SSSD_CONF_DELETED)
except OSError:
root_logger.debug("Error while moving /etc/sssd/sssd.conf to %s" %
paths.SSSD_CONF_DELETED)
root_logger.info(
"Redundant SSSD configuration file "
"/etc/sssd/sssd.conf was moved to /etc/sssd/sssd.conf.deleted")
sssd = services.service('sssd', api)
try:
sssd.stop()
except CalledProcessError:
root_logger.warning("SSSD service could not be stopped")
try:
sssd.disable()
except CalledProcessError as e:
root_logger.warning(
"Failed to disable automatic startup of the SSSD daemon: %s",
e)
tasks.restore_hostname(fstore, statestore)
if fstore.has_files():
root_logger.info("Restoring client configuration files")
fstore.restore_all_files()
unconfigure_nisdomain(statestore)
nscd = services.knownservices.nscd
nslcd = services.knownservices.nslcd
for service in (nscd, nslcd):
if service.is_installed():
restore_state(service, statestore)
else:
# this is an optional service, just log
root_logger.info(
"%s daemon is not installed, skip configuration",
service.service_name
)
ntp_configured = statestore.has_state('ntp')
if ntp_configured:
ntp_enabled = statestore.restore_state('ntp', 'enabled')
ntp_step_tickers = statestore.restore_state('ntp', 'step-tickers')
restored = False
try:
# Restore might fail due to file missing in backup
# the reason for it might be that freeipa-client was updated
# to this version but not unenrolled/enrolled again
# In such case it is OK to fail
restored = fstore.restore_file(paths.NTP_CONF)
restored |= fstore.restore_file(paths.SYSCONFIG_NTPD)
if ntp_step_tickers:
restored |= fstore.restore_file(paths.NTP_STEP_TICKERS)
except Exception:
pass
if not ntp_enabled:
services.knownservices.ntpd.stop()
services.knownservices.ntpd.disable()
else:
if restored:
services.knownservices.ntpd.restart()
try:
ntpconf.restore_forced_ntpd(statestore)
except CalledProcessError as e:
root_logger.error('Failed to start chronyd: %s', e)
if was_sshd_configured and services.knownservices.sshd.is_running():
services.knownservices.sshd.restart()
# Remove the Firefox configuration
if statestore.has_state('firefox'):
root_logger.info("Removing Firefox configuration.")
preferences_fname = statestore.restore_state(
'firefox', 'preferences_fname')
if preferences_fname is not None:
if file_exists(preferences_fname):
try:
os.remove(preferences_fname)
except Exception as e:
root_logger.warning(
"'%s' could not be removed: %s.",
preferences_fname, str(e))
root_logger.warning(
"Please remove file '%s' manually.", preferences_fname)
rv = SUCCESS
if fstore.has_files():
root_logger.error('Some files have not been restored, see %s' %
paths.SYSRESTORE_INDEX)
has_state = False
for module in statestore.modules:
root_logger.error(
'Some installation state for %s has not been '
'restored, see /var/lib/ipa/sysrestore/sysrestore.state',
module)
has_state = True
rv = CLIENT_UNINSTALL_ERROR
if has_state:
root_logger.warning(
'Some installation state has not been restored.\n'
'This may cause re-installation to fail.\n'
'It should be safe to remove /var/lib/ipa-client/sysrestore.state '
'but it may\n mean your system hasn\'t been restored '
'to its pre-installation state.')
# Remove the IPA configuration file
remove_file(paths.IPA_DEFAULT_CONF)
# Remove the CA cert from the systemwide certificate store
tasks.remove_ca_certs_from_systemwide_ca_store()
# Remove the CA cert
remove_file(paths.IPA_CA_CRT)
remove_file(paths.KDC_CA_BUNDLE_PEM)
remove_file(paths.CA_BUNDLE_PEM)
root_logger.info("Client uninstall complete.")
# The next block of code prompts for reboot, therefore all uninstall
# logic has to be done before
if not options.unattended:
root_logger.info(
"The original nsswitch.conf configuration has been restored.")
root_logger.info(
"You may need to restart services or reboot the machine.")
if not options.on_master:
if user_input("Do you want to reboot the machine?", False):
try:
run([paths.SBIN_REBOOT])
except Exception as e:
raise ScriptError(
"Reboot command failed to execute: {}".format(e),
rval=CLIENT_UNINSTALL_ERROR)
# IMPORTANT: Do not put any client uninstall logic after the block above
if rv:
raise ScriptError(rval=rv)
def init(installer):
try:
installer.debug = log_mgr.get_handler('console').level == 'debug'
except KeyError:
installer.debug = True
installer.unattended = not installer.interactive
if installer.domain_name:
installer.domain = normalize_hostname(installer.domain_name)
else:
installer.domain = None
installer.server = installer.servers
installer.realm = installer.realm_name
installer.primary = installer.fixed_primary
if installer.principal:
installer.password = installer.admin_password
else:
installer.password = installer.host_password
installer.hostname = installer.host_name
installer.conf_ntp = not installer.no_ntp
installer.trust_sshfp = installer.ssh_trust_dns
installer.conf_ssh = not installer.no_ssh
installer.conf_sshd = not installer.no_sshd
installer.conf_sudo = not installer.no_sudo
installer.create_sshfp = not installer.no_dns_sshfp
if installer.ca_cert_files:
installer.ca_cert_file = installer.ca_cert_files[-1]
else:
installer.ca_cert_file = None
installer.location = installer.automount_location
installer.dns_updates = installer.enable_dns_updates
installer.krb5_offline_passwords = not installer.no_krb5_offline_passwords
installer.sssd = not installer.no_sssd
@group
class ClientInstallInterface(hostname_.HostNameInstallInterface,
service.ServiceAdminInstallInterface,
sssd.SSSDInstallInterface):
"""
Interface of the client installer
Knobs defined here will be available in:
* ipa-client-install
* ipa-server-install
* ipa-replica-prepare
* ipa-replica-install
"""
description = "Client"
principal = extend_knob(
service.ServiceAdminInstallInterface.principal,
description="principal to use to join the IPA realm",
)
principal = enroll_only(principal)
host_password = knob(
str, None,
sensitive=True,
)
host_password = enroll_only(host_password)
keytab = knob(
str, None,
description="path to backed up keytab from previous enrollment",
cli_names=[None, '-k'],
)
keytab = enroll_only(keytab)
mkhomedir = knob(
None,
description="create home directories for users on their first login",
)
mkhomedir = enroll_only(mkhomedir)
force_join = knob(
None,
description="Force client enrollment even if already enrolled",
)
force_join = enroll_only(force_join)
ntp_servers = knob(
# pylint: disable=invalid-sequence-index
typing.List[str], None,
description="ntp server to use. This option can be used multiple "
"times",
cli_names='--ntp-server',
cli_metavar='NTP_SERVER',
)
ntp_servers = enroll_only(ntp_servers)
no_ntp = knob(
None,
description="do not configure ntp",
cli_names=[None, '-N'],
)
no_ntp = enroll_only(no_ntp)
force_ntpd = knob(
None,
description="Stop and disable any time&date synchronization services "
"besides ntpd",
)
force_ntpd = enroll_only(force_ntpd)
nisdomain = knob(
str, None,
description="NIS domain name",
)
nisdomain = enroll_only(nisdomain)
no_nisdomain = knob(
None,
description="do not configure NIS domain name",
)
no_nisdomain = enroll_only(no_nisdomain)
ssh_trust_dns = knob(
None,
description="configure OpenSSH client to trust DNS SSHFP records",
)
ssh_trust_dns = enroll_only(ssh_trust_dns)
no_ssh = knob(
None,
description="do not configure OpenSSH client",
)
no_ssh = enroll_only(no_ssh)
no_sshd = knob(
None,
description="do not configure OpenSSH server",
)
no_sshd = enroll_only(no_sshd)
no_sudo = knob(
None,
description="do not configure SSSD as data source for sudo",
)
no_sudo = enroll_only(no_sudo)
no_dns_sshfp = knob(
None,
description="do not automatically create DNS SSHFP records",
)
no_dns_sshfp = enroll_only(no_dns_sshfp)
kinit_attempts = knob(
int, 5,
description="number of attempts to obtain host TGT (defaults to 5).",
)
kinit_attempts = enroll_only(kinit_attempts)
@kinit_attempts.validator
def kinit_attempts(self, value):
if value < 1:
raise ValueError("expects an integer greater than 0.")
request_cert = knob(
None,
description="request certificate for the machine",
)
request_cert = prepare_only(request_cert)
def __init__(self, **kwargs):
super(ClientInstallInterface, self).__init__(**kwargs)
if self.servers and not self.domain_name:
raise RuntimeError(
"--server cannot be used without providing --domain")
if self.force_ntpd and self.no_ntp:
raise RuntimeError(
"--force-ntpd cannot be used together with --no-ntp")
if self.no_nisdomain and self.nisdomain:
raise RuntimeError(
"--no-nisdomain cannot be used together with --nisdomain")
if self.ip_addresses:
if self.enable_dns_updates:
raise RuntimeError(
"--ip-address cannot be used together with"
" --enable-dns-updates")
if self.all_ip_addresses:
raise RuntimeError(
"--ip-address cannot be used together with"
"--all-ip-addresses")
class ClientInstall(ClientInstallInterface,
automount.AutomountInstallInterface):
"""
Client installer
"""
replica_file = None
dm_password = None
ca_cert_files = extend_knob(
ClientInstallInterface.ca_cert_files,
)
@ca_cert_files.validator
def ca_cert_files(self, value):
if not isinstance(value, list):
raise ValueError("Expected list, got {!r}".format(value))
# this is what init() does
value = value[-1]
if not os.path.exists(value):
raise ValueError("'%s' does not exist" % value)
if not os.path.isfile(value):
raise ValueError("'%s' is not a file" % value)
if not os.path.isabs(value):
raise ValueError("'%s' is not an absolute file path" % value)
try:
x509.load_certificate_from_file(value)
except Exception:
raise ValueError("'%s' is not a valid certificate file" % value)
@property
def prompt_password(self):
return self.interactive
no_ac = knob(
None,
description="do not modify the nsswitch.conf and PAM configuration",
cli_names='--noac',
)
force = knob(
None,
description="force setting of LDAP/Kerberos conf",
cli_names=[None, '-f'],
)
on_master = False
configure_firefox = knob(
None,
description="configure Firefox to use IPA domain credentials",
)
firefox_dir = knob(
str, None,
description="specify directory where Firefox is installed (for "
"example: '/usr/lib/firefox')",
)
def __init__(self, **kwargs):
super(ClientInstall, self).__init__(**kwargs)
if self.firefox_dir and not self.configure_firefox:
raise RuntimeError(
"--firefox-dir cannot be used without --configure-firefox "
"option")
@step()
def main(self):
init(self)
install_check(self)
yield
install(self)
@main.uninstaller
def main(self):
init(self)
uninstall_check(self)
yield
uninstall(self)
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