Coverage for ipaserver/install/adtrustinstance : 13%
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# Authors: Sumit Bose <sbose@redhat.com> # # Copyright (C) 2011 Red Hat # see file 'COPYING' for use and warranty information # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. #
dns_zone_exists
WARNING: could not set selinux boolean(s) %(var)s to true. The adtrust service may not function correctly until this boolean is successfully change with the command: /usr/sbin/setsebool -P %(var)s true Try updating the policycoreutils and selinux-policy packages. """
Entry %(dn)s does not exist. This means upgrade from IPA 2.x to 3.x did not went well and required S4U2Proxy configuration was not set up properly. Please run ipa-ldap-updater manually and re-run ipa-adtrust-instal again afterwards. """
for smbfile in ['/usr/sbin/smbd', '/usr/bin/net']: if not os.path.exists(smbfile): print "%s was not found on this system" % smbfile print "Please install the 'samba' packages and " \ "start the installation again" return False
#TODO: Add check for needed samba4 libraries
return True
try: conf_fd = open('/etc/samba/smb.conf', 'r') except IOError, err: if err.errno == errno.ENOENT: return False
lines = conf_fd.readlines() conf_fd.close() for line in lines: if line.startswith('### Added by IPA Installer ###'): return True return False
# NetBIOS names may not be longer than 15 allowed characters if not s or len(s) > 15 or \ ''.join([c for c in s if c not in ALLOWED_NETBIOS_CHARS]): return False
return True
return ''.join([c for c in s.split('.')[0].upper() \ if c in ALLOWED_NETBIOS_CHARS])[:15]
self.fqdn = None self.ip_address = None self.realm = None self.domain_name = None self.netbios_name = None self.reset_netbios_name = None self.no_msdcs = None self.add_sids = None self.smbd_user = None self.suffix = DN() self.ldapi_socket = None self.smb_conf = None self.smb_dn = None self.smb_dn_pwd = None self.trust_dn = None self.smb_dom_dn = None self.sub_dict = None self.cifs_principal = None self.cifs_agent = None self.selinux_booleans = None self.rid_base = None self.secondary_rid_base = None
service.Service.__init__(self, "smb", service_desc="CIFS", dm_password=None, ldapi=True)
if fstore: self.fstore = fstore else: self.fstore = sysrestore.FileStore('/var/lib/ipa/sysrestore')
sub_ids = struct.unpack("<LLL", os.urandom(12)) return "S-1-5-21-%d-%d-%d" % (sub_ids[0], sub_ids[1], sub_ids[2])
""" The IPA admin and the IPA admins group with get the well knows SIDs used by AD for the administrator and the administrator group.
By default new users belong only to a user private group (UPG) and no other Posix group since ipausers is not a Posix group anymore. To be able to add a RID to the primary RID attribute in a PAC a fallback group is added. """
admin_dn = DN(('uid', 'admin'), api.env.container_user, self.suffix) admin_group_dn = DN(('cn', 'admins'), api.env.container_group, self.suffix) try: dom_entry = self.admin_conn.get_entry(self.smb_dom_dn) except errors.NotFound: self.print_msg("Samba domain object not found") return
dom_sid = dom_entry.single_value(self.ATTR_SID, None) if not dom_sid: self.print_msg("Samba domain object does not have a SID") return
try: admin_entry = self.admin_conn.get_entry(admin_dn) except: self.print_msg("IPA admin object not found") return
try: admin_group_entry = self.admin_conn.get_entry(admin_group_dn) except: self.print_msg("IPA admin group object not found") return
if admin_entry.single_value(self.ATTR_SID, None): self.print_msg("Admin SID already set, nothing to do") else: try: self.admin_conn.modify_s(admin_dn, \ [(ldap.MOD_ADD, "objectclass", self.OBJC_USER), \ (ldap.MOD_ADD, self.ATTR_SID, dom_sid + "-500")]) except: self.print_msg("Failed to modify IPA admin object")
if admin_group_entry.single_value(self.ATTR_SID, None): self.print_msg("Admin group SID already set, nothing to do") else: try: self.admin_conn.modify_s(admin_group_dn, \ [(ldap.MOD_ADD, "objectclass", self.OBJC_GROUP), \ (ldap.MOD_ADD, self.ATTR_SID, dom_sid + "-512")]) except: self.print_msg("Failed to modify IPA admin group object")
""" By default new users belong only to a user private group (UPG) and no other Posix group since ipausers is not a Posix group anymore. To be able to add a RID to the primary RID attribute in a PAC a fallback group is added.
Since this method must be run after a restart of the directory server to enable the sidgen plugin we have to reconnect to the directory server. """
self.ldap_connect()
try: dom_entry = self.admin_conn.get_entry(self.smb_dom_dn) except errors.NotFound: self.print_msg("Samba domain object not found") return
if dom_entry.single_value(self.ATTR_FALLBACK_GROUP, None): self.print_msg("Fallback group already set, nothing to do") return
fb_group_dn = DN(('cn', self.FALLBACK_GROUP_NAME), api.env.container_group, self.suffix) try: self.admin_conn.get_entry(fb_group_dn) except errors.NotFound: try: self._ldap_mod('default-smb-group.ldif', self.sub_dict) except Exception, e: self.print_msg("Failed to add fallback group.") raise e
# _ldap_mod does not return useful error codes, so we must check again # if the fallback group was created properly. try: self.admin_conn.get_entry(fb_group_dn) except errors.NotFound: self.print_msg("Failed to add fallback group.") return
try: mod = [(ldap.MOD_ADD, self.ATTR_FALLBACK_GROUP, fb_group_dn)] self.admin_conn.modify_s(self.smb_dom_dn, mod) except: self.print_msg("Failed to add fallback group to domain object")
""" Add RID bases to the range object for the local ID range.
TODO: handle missing or multiple ranges more gracefully. """
try: res = self.admin_conn.get_entries( DN(api.env.container_ranges, self.suffix), ldap.SCOPE_ONELEVEL, "(objectclass=ipaDomainIDRange)") if len(res) != 1: root_logger.critical("Found more than one ID range for the " \ "local domain.") raise RuntimeError("Too many ID ranges\n")
if res[0].single_value('ipaBaseRID', None) or \ res[0].single_value('ipaSecondaryBaseRID', None): self.print_msg("RID bases already set, nothing to do") return
size = res[0].single_value('ipaIDRangeSize', None) if abs(self.rid_base - self.secondary_rid_base) > size: self.print_msg("Primary and secondary RID base are too close. " \ "They have to differ at least by %d." % size) raise RuntimeError("RID bases too close.\n")
try: self.admin_conn.modify_s(res[0].dn, [(ldap.MOD_ADD, "ipaBaseRID", \ str(self.rid_base)), \ (ldap.MOD_ADD, "ipaSecondaryBaseRID", \ str(self.secondary_rid_base))]) except: self.print_msg("Failed to add RID bases to the local range object")
except errors.NotFound as e: root_logger.critical("ID range of the local domain not found, " \ "define it and run again.") raise e
""" Set the NetBIOS domain name to a new value. """ self.print_msg("Reset NetBIOS domain name")
try: self.admin_conn.modify_s(self.smb_dom_dn, [(ldap.MOD_REPLACE, self.ATTR_FLAT_NAME, self.netbios_name)]) except ldap.LDAPError: self.print_msg("Failed to reset the NetBIOS domain name")
try: self.admin_conn.get_entry(self.smb_dom_dn) if self.reset_netbios_name: self.__reset_netbios_name() else : self.print_msg("Samba domain object already exists") return except errors.NotFound: pass
for new_dn in (self.trust_dn, \ DN(('cn', 'ad'), self.trust_dn), \ DN(api.env.container_cifsdomains, self.suffix)): try: self.admin_conn.get_entry(new_dn) except errors.NotFound: try: name = new_dn[1].attr except Exception, e: self.print_msg('Cannot extract RDN attribute value from "%s": %s' % \ (new_dn, e)) return entry = self.admin_conn.make_entry( new_dn, objectclass=['nsContainer'], cn=[name]) self.admin_conn.add_entry(entry)
entry = self.admin_conn.make_entry( self.smb_dom_dn, { 'objectclass': [self.OBJC_DOMAIN, "nsContainer"], 'cn': [self.domain_name], self.ATTR_FLAT_NAME: [self.netbios_name], self.ATTR_SID: [self.__gen_sid_string()], self.ATTR_GUID: [str(uuid.uuid4())], } ) #TODO: which MAY attributes do we want to set ? self.admin_conn.add_entry(entry)
self.fstore.backup_file(self.smb_conf)
conf_fd = open(self.smb_conf, "w") conf_fd.write('### Added by IPA Installer ###\n') conf_fd.write('[global]\n') conf_fd.write('config backend = registry\n') conf_fd.close()
""" Add directory server plugin configuration if it not already exists. """ try: plugin_dn = DN(('cn', plugin_cn), ('cn', 'plugins'), ('cn', 'config')) self.admin_conn.get_entry(plugin_dn) self.print_msg('%s plugin already configured, nothing to do' % name) except errors.NotFound: try: self._ldap_mod(ldif_file, self.sub_dict) except Exception: pass
""" Add cldap directory server plugin configuration if it not already exists. """ self.__add_plugin_conf('CLDAP', 'ipa_cldap', 'ipa-cldap-conf.ldif')
""" Add sidgen directory server plugin configuration and the related task if they not already exist. """ self.__add_plugin_conf('Sidgen', 'IPA SIDGEN', 'ipa-sidgen-conf.ldif') self.__add_plugin_conf('Sidgen task', 'ipa-sidgen-task', 'ipa-sidgen-task-conf.ldif')
""" Add SIDs for existing users and groups """
try: self._ldap_mod("ipa-sidgen-task-run.ldif", self.sub_dict) except: pass
""" Add directory server configuration for the extdom extended operation if it not already exists. """ self.__add_plugin_conf('Extdom', 'ipa_extdom_extop', 'ipa-extdom-extop-conf.ldif')
""" Add CIFS principal to S4U2Proxy target """
targets_dn = DN(('cn', 'ipa-cifs-delegation-targets'), ('cn', 's4u2proxy'), ('cn', 'etc'), self.suffix) try: current = self.admin_conn.get_entry(targets_dn) members = current.get('memberPrincipal', []) if not(self.cifs_principal in members): current["memberPrincipal"] = members + [self.cifs_principal] self.admin_conn.update_entry(targets_dn, current) else: self.print_msg('cifs principal already targeted, nothing to do.') except errors.NotFound: self.print_msg(UPGRADE_ERROR % dict(dn=targets_dn))
template = os.path.join(ipautil.SHARE_DIR, "smb.conf.template") conf = ipautil.template_file(template, self.sub_dict) [tmp_fd, tmp_name] = tempfile.mkstemp() os.write(tmp_fd, conf) os.close(tmp_fd)
args = ["/usr/bin/net", "conf", "import", tmp_name]
try: ipautil.run(args) finally: os.remove(tmp_name)
try: api.Command.service_add(unicode(self.cifs_principal)) # Add the principal to the 'adtrust agents' group # as 389-ds only operates with GroupOfNames, we have to use # the principal's proper dn as defined in self.cifs_agent try: current = self.admin_conn.get_entry(self.smb_dn) members = current.get('member', []) if not(self.cifs_agent in members): current["member"] = members + [self.cifs_agent] self.admin_conn.update_entry(self.smb_dn, current) except errors.NotFound: entry = self.admin_conn.make_entry( self.smb_dn, objectclass=["top", "GroupOfNames"], cn=[self.smb_dn['cn']], member=[self.cifs_agent], ) self.admin_conn.add_entry(entry) except Exception, e: # CIFS principal already exists, it is not the first time adtrustinstance is managed # That's fine, we we'll re-extract the key again. pass
samba_keytab = "/etc/samba/samba.keytab" if os.path.exists(samba_keytab): try: ipautil.run(["ipa-rmkeytab", "--principal", self.cifs_principal, "-k", samba_keytab]) except ipautil.CalledProcessError, e: if e.returncode != 5: root_logger.critical("Failed to remove old key for %s" % self.cifs_principal)
try: ipautil.run(["ipa-getkeytab", "--server", self.fqdn, "--principal", self.cifs_principal, "-k", samba_keytab]) except ipautil.CalledProcessError, e: root_logger.critical("Failed to add key for %s" % self.cifs_principal)
return "%(prio)d 100 %(port)d %(host)s" % dict(host=host,prio=prio,port=port)
""" Add DNS service records for Windows if DNS is enabled and the DNS zone is managed. If there are already service records for LDAP and Kerberos their values are used. Otherwise default values are used. """
zone = self.domain_name host = self.fqdn.split(".")[0] priority = 0
ipa_srv_rec = ( ("_ldap._tcp", [self.srv_rec(host, 389, priority)], 389), ("_kerberos._tcp", [self.srv_rec(host, 88, priority)], 88), ("_kerberos._udp", [self.srv_rec(host, 88, priority)], 88), ) win_srv_suffix = (".Default-First-Site-Name._sites.dc._msdcs", ".dc._msdcs")
err_msg = None
if self.no_msdcs: err_msg = '--no-msdcs was given, special DNS service records ' \ 'are not added to local DNS server' else: ret = api.Command['dns_is_enabled']() if not ret['result']: err_msg = "DNS management was not enabled at install time." else: if not dns_zone_exists(zone): err_msg = "DNS zone %s cannot be managed " \ "as it is not defined in IPA" % zone
if err_msg: self.print_msg(err_msg) self.print_msg("Add the following service records to your DNS " \ "server for DNS zone %s: " % zone) for (srv, rdata) in ipa_srv_rec: for suff in win_srv_suffix: self.print_msg(" - %s%s" % (srv, suff)) return
for (srv, rdata, port) in ipa_srv_rec: cifs_rdata = list() for fqdn in self.cifs_hosts: cifs_srv = self.srv_rec(fqdn, port, priority) cifs_rdata.append(cifs_srv) cifs_rdata.extend(rdata)
for suff in win_srv_suffix: win_srv = srv+suff win_rdata = get_rr(zone, win_srv, "SRV") if win_rdata: for rec in win_rdata: del_rr(zone, win_srv, "SRV", rec) for rec in cifs_rdata: add_rr(zone, win_srv, "SRV", rec)
selinux = False try: if (os.path.exists('/usr/sbin/selinuxenabled')): ipautil.run(["/usr/sbin/selinuxenabled"]) selinux = True except ipautil.CalledProcessError: # selinuxenabled returns 1 if not enabled pass
if selinux: # Don't assume all booleans are available sebools = [] for var in self.selinux_booleans: try: (stdout, stderr, returncode) = ipautil.run(["/usr/sbin/getsebool", var]) if stdout and not stderr and returncode == 0: self.backup_state(var, stdout.split()[2]) sebools.append(var) except: pass
if sebools: bools = [var + "=true" for var in sebools] args = ["/usr/sbin/setsebool", "-P"] args.extend(bools); try: ipautil.run(args) except: self.print_msg(SELINUX_WARNING % dict(var=','.join(sebools)))
""" Set dns_lookup_kdc to true and master_kdc in /etc/krb5.conf """
if not self.fqdn or not self.realm: self.print_msg("Cannot modify /etc/krb5.conf")
krbconf = ipaclient.ipachangeconf.IPAChangeConf("IPA Installer") krbconf.setOptionAssignment((" = ", " ")) krbconf.setSectionNameDelimiters(("[", "]")) krbconf.setSubSectionDelimiters(("{", "}")) krbconf.setIndent(("", " ", " "))
libopts = [{'name':'dns_lookup_kdc', 'type':'option', 'action':'set', 'value':'true'}]
master_kdc = self.fqdn + ":88" kropts = [{'name':'master_kdc', 'type':'option', 'action':'set', 'value':master_kdc}]
ropts = [{'name':self.realm, 'type':'subsection', 'action':'set', 'value':kropts}]
opts = [{'name':'libdefaults', 'type':'section', 'action':'set', 'value':libopts}, {'name':'realms', 'type':'section', 'action':'set', 'value':ropts}]
krbconf.changeConf("/etc/krb5.conf", opts)
""" Update /etc/krb5.conf if needed """
try: krb5conf = open("/etc/krb5.conf", 'r') except IOError, e: self.print_msg("Cannot open /etc/krb5.conf (%s)\n" % str(e)) return
has_dns_lookup_kdc_true = False for line in krb5conf: if re.match("^\s*dns_lookup_kdc\s*=\s*[Tt][Rr][Uu][Ee]\s*$", line): has_dns_lookup_kdc_true = True break krb5conf.close()
if not has_dns_lookup_kdc_true: self.__mod_krb5_conf() else: self.print_msg("'dns_lookup_kdc' already set to 'true', " "nothing to do.")
try: cifs_services = DN(api.env.container_service, self.suffix) # Search for cifs services which also belong to adtrust agents, these are our DCs res = self.admin_conn.get_entries(cifs_services, ldap.SCOPE_ONELEVEL, "(&(krbprincipalname=cifs/*@%s)(memberof=%s))" % (self.realm, str(self.smb_dn))) if len(res) > 1: # there are other CIFS services defined, we are not alone for entry in res: managedBy = entry.single_value('managedBy', None) if managedBy: fqdn = DN(managedBy)['fqdn'] if fqdn != unicode(self.fqdn): # this is CIFS service of a different host in our # REALM, we need to remember it to announce via # SRV records for _msdcs self.cifs_hosts.append(fqdn.split(".")[0])
except Exception, e: root_logger.critical("Checking replicas for cifs principals failed with error '%s'" % e)
try: self.start() ipaservices.service('winbind').start() except: root_logger.critical("CIFS services failed to start")
self.backup_state("running", self.is_running()) try: self.stop() except: pass
try: ipaservices.knownservices.dirsrv.restart() except: pass
self.backup_state("enabled", self.is_enabled()) # We do not let the system start IPA components on its own, # Instead we reply on the IPA init script to start only enabled # components as found in our LDAP configuration tree # Note that self.dm_password is None for ADTrustInstance because # we ensure to be called as root and using ldapi to use autobind try: self.ldap_enable('ADTRUST', self.fqdn, self.dm_password, \ self.suffix) except (ldap.ALREADY_EXISTS, errors.DuplicateEntry), e: root_logger.info("ADTRUST Service startup entry already exists.")
try: self.ldap_enable('EXTID', self.fqdn, self.dm_password, \ self.suffix) except (ldap.ALREADY_EXISTS, errors.DuplicateEntry), e: root_logger.info("EXTID Service startup entry already exists.")
self.sub_dict = dict(REALM = self.realm, SUFFIX = self.suffix, NETBIOS_NAME = self.netbios_name, SMB_DN = self.smb_dn, LDAPI_SOCKET = self.ldapi_socket, FQDN = self.fqdn)
reset_netbios_name, rid_base, secondary_rid_base, no_msdcs=False, add_sids=False, smbd_user="samba"): self.fqdn = fqdn self.ip_address = ip_address self.realm = realm_name self.domain_name = domain_name self.netbios_name = netbios_name self.reset_netbios_name = reset_netbios_name self.rid_base = rid_base self.secondary_rid_base = secondary_rid_base self.no_msdcs = no_msdcs self.add_sids = add_sids self.smbd_user = smbd_user self.suffix = ipautil.realm_to_suffix(self.realm) self.ldapi_socket = "%%2fvar%%2frun%%2fslapd-%s.socket" % \ realm_to_serverid(self.realm)
self.smb_conf = "/etc/samba/smb.conf"
self.smb_dn = DN(('cn', 'adtrust agents'), ('cn', 'sysaccounts'), ('cn', 'etc'), self.suffix)
self.trust_dn = DN(api.env.container_trusts, self.suffix) self.smb_dom_dn = DN(('cn', self.domain_name), api.env.container_cifsdomains, self.suffix) self.cifs_principal = "cifs/" + self.fqdn + "@" + self.realm self.cifs_agent = DN(('krbprincipalname', self.cifs_principal.lower()), api.env.container_service, self.suffix) self.selinux_booleans = ["samba_portmapper"] self.cifs_hosts = list()
self.__setup_sub_dict()
self.ldap_connect()
if self.admin_conn.get_entries( DN(api.env.container_ranges, self.suffix), ldap.SCOPE_ONELEVEL, "(objectclass=ipaDomainIDRange)"): return
try: entry = self.admin_conn.get_entry( DN(('cn', 'admins'), api.env.container_group, self.suffix)) except errors.NotFound: raise ValueError("No local ID range and no admins group found.\n" \ "Add local ID range manually and try again!")
base_id = int(entry.single_value('gidNumber')) id_range_size = 200000
id_filter = "(&" \ "(|(objectclass=posixAccount)" \ "(objectclass=posixGroup)" \ "(objectclass=ipaIDObject))" \ "(|(uidNumber<=%d)(uidNumber>=%d)" \ "(gidNumber<=%d)(gidNumner>=%d)))" % \ ((base_id - 1), (base_id + id_range_size), (base_id - 1), (base_id + id_range_size)) if self.admin_conn.get_entries(DN(('cn', 'accounts'), self.suffix), ldap.SCOPE_SUBTREE, id_filter): raise ValueError("There are objects with IDs out of the expected" \ "range.\nAdd local ID range manually and try " \ "again!")
entry = self.admin_conn.make_entry( DN( ('cn', ('%s_id_range' % self.realm)), api.env.container_ranges, self.suffix), objectclass=['ipaDomainIDRange'], cn=['%s_id_range' % self.realm], ipaBaseID=[str(base_id)], ipaIDRangeSize=[str(id_range_size)], ) self.admin_conn.add_entry(entry)
self.ldap_connect()
self.step("stopping smbd", self.__stop) self.step("creating samba domain object", \ self.__create_samba_domain_object) self.step("creating samba config registry", self.__write_smb_registry) self.step("writing samba config file", self.__write_smb_conf) self.step("adding cifs Kerberos principal", self.__setup_principal) self.step("check for cifs services defined on other replicas", self.__check_replica) self.step("adding cifs principal to S4U2Proxy targets", self.__add_s4u2proxy_target) self.step("adding admin(group) SIDs", self.__add_admin_sids) self.step("adding RID bases", self.__add_rid_bases) self.step("updating Kerberos config", self.__update_krb5_conf) self.step("activating CLDAP plugin", self.__add_cldap_module) self.step("activating sidgen plugin and task", self.__add_sidgen_module) self.step("activating extdom plugin", self.__add_extdom_module) self.step("configuring smbd to start on boot", self.__enable) self.step("adding special DNS service records", \ self.__add_dns_service_records) self.step("restarting Directory Server to take MS PAC and LDAP plugins changes into account", \ self.__restart_dirsrv) self.step("adding fallback group", self.__add_fallback_group) self.step("setting SELinux booleans", \ self.__configure_selinux_for_smbd) self.step("starting CIFS services", self.__start)
if self.add_sids: self.step("adding SIDs to existing users and groups", self.__add_sids)
self.start_creation(show_service_name=False)
if self.is_configured(): self.print_msg("Unconfiguring %s" % self.service_name)
running = self.restore_state("running") enabled = self.restore_state("enabled")
try: self.stop() except: pass
for r_file in [self.smb_conf]: try: self.fstore.restore_file(r_file) except ValueError, error: root_logger.debug(error) pass
for var in self.selinux_booleans: sebool_state = self.restore_state(var) if not sebool_state is None: try: ipautil.run(["/usr/sbin/setsebool", "-P", var, sebool_state]) except: self.print_msg(SELINUX_WARNING % dict(var=var))
if not enabled is None and not enabled: self.disable()
if not running is None and running: self.start() |