# Unix SMB/CIFS implementation. # backend code for provisioning a Samba AD server # Copyright (C) Jelmer Vernooij 2007-2012 # Copyright (C) Andrew Bartlett 2008-2009 # Copyright (C) Oliver Liebel 2008-2009 # # Based on the original in EJS: # Copyright (C) Andrew Tridgell 2005 # # 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 . # """Functions for setting up a Samba configuration.""" __docformat__ = "restructuredText" from samba.compat import urllib_quote from base64 import b64encode import errno import os import stat import re import pwd import grp import logging import time import uuid import socket import string import tempfile import samba.dsdb import ldb from samba.auth import system_session, admin_session import samba from samba.samba3 import smbd, passdb from samba.samba3 import param as s3param from samba.dsdb import DS_DOMAIN_FUNCTION_2000 from samba import ( Ldb, MAX_NETBIOS_NAME_LEN, check_all_substituted, is_valid_netbios_char, setup_file, substitute_var, valid_netbios_name, version, is_heimdal_built, ) from samba.dcerpc import security, misc from samba.dcerpc.misc import ( SEC_CHAN_BDC, SEC_CHAN_WKSTA, ) from samba.dsdb import ( DS_DOMAIN_FUNCTION_2003, DS_DOMAIN_FUNCTION_2008_R2, ENC_ALL_TYPES, ) from samba.idmap import IDmapDB from samba.ms_display_specifiers import read_ms_ldif from samba.ntacls import setntacl, getntacl, dsacl2fsacl from samba.ndr import ndr_pack, ndr_unpack from samba.provision.backend import ( ExistingBackend, FDSBackend, LDBBackend, OpenLDAPBackend, ) from samba.descriptor import ( get_empty_descriptor, get_config_descriptor, get_config_partitions_descriptor, get_config_sites_descriptor, get_config_ntds_quotas_descriptor, get_config_delete_protected1_descriptor, get_config_delete_protected1wd_descriptor, get_config_delete_protected2_descriptor, get_domain_descriptor, get_domain_infrastructure_descriptor, get_domain_builtin_descriptor, get_domain_computers_descriptor, get_domain_users_descriptor, get_domain_controllers_descriptor, get_domain_delete_protected1_descriptor, get_domain_delete_protected2_descriptor, get_dns_partition_descriptor, get_dns_forest_microsoft_dns_descriptor, get_dns_domain_microsoft_dns_descriptor, get_managed_service_accounts_descriptor, ) from samba.provision.common import ( setup_path, setup_add_ldif, setup_modify_ldif, FILL_FULL, FILL_SUBDOMAIN, FILL_NT4SYNC, FILL_DRS ) from samba.provision.sambadns import ( get_dnsadmins_sid, setup_ad_dns, create_dns_update_list ) import samba.param import samba.registry from samba.schema import Schema from samba.samdb import SamDB from samba.dbchecker import dbcheck from samba.provision.kerberos import create_kdc_conf from samba.samdb import get_default_backend_store DEFAULT_POLICY_GUID = "31B2F340-016D-11D2-945F-00C04FB984F9" DEFAULT_DC_POLICY_GUID = "6AC1786C-016F-11D2-945F-00C04FB984F9" DEFAULTSITE = "Default-First-Site-Name" LAST_PROVISION_USN_ATTRIBUTE = "lastProvisionUSN" DEFAULT_MIN_PWD_LENGTH = 7 class ProvisionPaths(object): def __init__(self): self.shareconf = None self.hklm = None self.hkcu = None self.hkcr = None self.hku = None self.hkpd = None self.hkpt = None self.samdb = None self.idmapdb = None self.secrets = None self.keytab = None self.dns_keytab = None self.dns = None self.winsdb = None self.private_dir = None self.binddns_dir = None self.state_dir = None class ProvisionNames(object): def __init__(self): self.ncs = None self.rootdn = None self.domaindn = None self.configdn = None self.schemadn = None self.dnsforestdn = None self.dnsdomaindn = None self.ldapmanagerdn = None self.dnsdomain = None self.realm = None self.netbiosname = None self.domain = None self.hostname = None self.sitename = None self.smbconf = None self.domainsid = None self.forestsid = None self.domainguid = None self.name_map = {} def find_provision_key_parameters(samdb, secretsdb, idmapdb, paths, smbconf, lp): """Get key provision parameters (realm, domain, ...) from a given provision :param samdb: An LDB object connected to the sam.ldb file :param secretsdb: An LDB object connected to the secrets.ldb file :param idmapdb: An LDB object connected to the idmap.ldb file :param paths: A list of path to provision object :param smbconf: Path to the smb.conf file :param lp: A LoadParm object :return: A list of key provision parameters """ names = ProvisionNames() names.adminpass = None # NT domain, kerberos realm, root dn, domain dn, domain dns name names.domain = lp.get("workgroup").upper() names.realm = lp.get("realm") names.dnsdomain = names.realm.lower() basedn = samba.dn_from_dns_name(names.dnsdomain) names.realm = names.realm.upper() # netbiosname # Get the netbiosname first (could be obtained from smb.conf in theory) res = secretsdb.search(expression="(flatname=%s)" % names.domain,base="CN=Primary Domains", scope=ldb.SCOPE_SUBTREE, attrs=["sAMAccountName"]) names.netbiosname = str(res[0]["sAMAccountName"]).replace("$","") names.smbconf = smbconf # That's a bit simplistic but it's ok as long as we have only 3 # partitions current = samdb.search(expression="(objectClass=*)", base="", scope=ldb.SCOPE_BASE, attrs=["defaultNamingContext", "schemaNamingContext", "configurationNamingContext","rootDomainNamingContext", "namingContexts"]) names.configdn = current[0]["configurationNamingContext"][0] names.schemadn = current[0]["schemaNamingContext"][0] if not (ldb.Dn(samdb, basedn) == (ldb.Dn(samdb, current[0]["defaultNamingContext"][0].decode('utf8')))): raise ProvisioningError(("basedn in %s (%s) and from %s (%s)" "is not the same ..." % (paths.samdb, str(current[0]["defaultNamingContext"][0].decode('utf8')), paths.smbconf, basedn))) names.domaindn=current[0]["defaultNamingContext"][0] names.rootdn=current[0]["rootDomainNamingContext"][0] names.ncs=current[0]["namingContexts"] names.dnsforestdn = None names.dnsdomaindn = None for i in range(0, len(names.ncs)): nc = names.ncs[i] dnsforestdn = "DC=ForestDnsZones,%s" % (str(names.rootdn)) if nc == dnsforestdn: names.dnsforestdn = dnsforestdn continue dnsdomaindn = "DC=DomainDnsZones,%s" % (str(names.domaindn)) if nc == dnsdomaindn: names.dnsdomaindn = dnsdomaindn continue # default site name res3 = samdb.search(expression="(objectClass=site)", base="CN=Sites," + names.configdn, scope=ldb.SCOPE_ONELEVEL, attrs=["cn"]) names.sitename = str(res3[0]["cn"]) # dns hostname and server dn res4 = samdb.search(expression="(CN=%s)" % names.netbiosname, base="OU=Domain Controllers,%s" % basedn, scope=ldb.SCOPE_ONELEVEL, attrs=["dNSHostName"]) if len(res4) == 0: raise ProvisioningError("Unable to find DC called CN=%s under OU=Domain Controllers,%s" % (names.netbiosname, basedn)) names.hostname = str(res4[0]["dNSHostName"]).replace("." + names.dnsdomain, "") server_res = samdb.search(expression="serverReference=%s" % res4[0].dn, attrs=[], base=names.configdn) names.serverdn = str(server_res[0].dn) # invocation id/objectguid res5 = samdb.search(expression="(objectClass=*)", base="CN=NTDS Settings,%s" % str(names.serverdn), scope=ldb.SCOPE_BASE, attrs=["invocationID", "objectGUID"]) names.invocation = str(ndr_unpack(misc.GUID, res5[0]["invocationId"][0])) names.ntdsguid = str(ndr_unpack(misc.GUID, res5[0]["objectGUID"][0])) # domain guid/sid res6 = samdb.search(expression="(objectClass=*)", base=basedn, scope=ldb.SCOPE_BASE, attrs=["objectGUID", "objectSid","msDS-Behavior-Version" ]) names.domainguid = str(ndr_unpack(misc.GUID, res6[0]["objectGUID"][0])) names.domainsid = ndr_unpack( security.dom_sid, res6[0]["objectSid"][0]) names.forestsid = ndr_unpack( security.dom_sid, res6[0]["objectSid"][0]) if res6[0].get("msDS-Behavior-Version") is None or \ int(res6[0]["msDS-Behavior-Version"][0]) < DS_DOMAIN_FUNCTION_2000: names.domainlevel = DS_DOMAIN_FUNCTION_2000 else: names.domainlevel = int(res6[0]["msDS-Behavior-Version"][0]) # policy guid res7 = samdb.search(expression="(name={%s})" % DEFAULT_POLICY_GUID, base="CN=Policies,CN=System," + basedn, scope=ldb.SCOPE_ONELEVEL, attrs=["cn","displayName"]) names.policyid = str(res7[0]["cn"]).replace("{","").replace("}","") # dc policy guid res8 = samdb.search(expression="(name={%s})" % DEFAULT_DC_POLICY_GUID, base="CN=Policies,CN=System," + basedn, scope=ldb.SCOPE_ONELEVEL, attrs=["cn","displayName"]) if len(res8) == 1: names.policyid_dc = str(res8[0]["cn"]).replace("{","").replace("}","") else: names.policyid_dc = None res9 = idmapdb.search(expression="(cn=%s-%s)" % (str(names.domainsid), security.DOMAIN_RID_ADMINISTRATOR), attrs=["xidNumber", "type"]) if len(res9) != 1: raise ProvisioningError("Unable to find uid/gid for Domain Admins rid (%s-%s" % (str(names.domainsid), security.DOMAIN_RID_ADMINISTRATOR)) if res9[0]["type"][0] == "ID_TYPE_BOTH": names.root_gid = res9[0]["xidNumber"][0] else: names.root_gid = pwd.getpwuid(int(res9[0]["xidNumber"][0])).pw_gid res10 = samdb.search(expression="(samaccountname=dns)", scope=ldb.SCOPE_SUBTREE, attrs=["dn"], controls=["search_options:1:2"]) if (len(res10) > 0): has_legacy_dns_account = True else: has_legacy_dns_account = False res11 = samdb.search(expression="(samaccountname=dns-%s)" % names.netbiosname, scope=ldb.SCOPE_SUBTREE, attrs=["dn"], controls=["search_options:1:2"]) if (len(res11) > 0): has_dns_account = True else: has_dns_account = False if names.dnsdomaindn is not None: if has_dns_account: names.dns_backend = 'BIND9_DLZ' else: names.dns_backend = 'SAMBA_INTERNAL' elif has_dns_account or has_legacy_dns_account: names.dns_backend = 'BIND9_FLATFILE' else: names.dns_backend = 'NONE' dns_admins_sid = get_dnsadmins_sid(samdb, names.domaindn) names.name_map['DnsAdmins'] = str(dns_admins_sid) return names def update_provision_usn(samdb, low, high, id, replace=False): """Update the field provisionUSN in sam.ldb This field is used to track range of USN modified by provision and upgradeprovision. This value is used afterward by next provision to figure out if the field have been modified since last provision. :param samdb: An LDB object connect to sam.ldb :param low: The lowest USN modified by this upgrade :param high: The highest USN modified by this upgrade :param id: The invocation id of the samba's dc :param replace: A boolean indicating if the range should replace any existing one or appended (default) """ tab = [] if not replace: entry = samdb.search(base="@PROVISION", scope=ldb.SCOPE_BASE, attrs=[LAST_PROVISION_USN_ATTRIBUTE, "dn"]) for e in entry[0][LAST_PROVISION_USN_ATTRIBUTE]: if not re.search(';', e): e = "%s;%s" % (e, id) tab.append(str(e)) tab.append("%s-%s;%s" % (low, high, id)) delta = ldb.Message() delta.dn = ldb.Dn(samdb, "@PROVISION") delta[LAST_PROVISION_USN_ATTRIBUTE] = ldb.MessageElement(tab, ldb.FLAG_MOD_REPLACE, LAST_PROVISION_USN_ATTRIBUTE) entry = samdb.search(expression='provisionnerID=*', base="@PROVISION", scope=ldb.SCOPE_BASE, attrs=["provisionnerID"]) if len(entry) == 0 or len(entry[0]) == 0: delta["provisionnerID"] = ldb.MessageElement(id, ldb.FLAG_MOD_ADD, "provisionnerID") samdb.modify(delta) def set_provision_usn(samdb, low, high, id): """Set the field provisionUSN in sam.ldb This field is used to track range of USN modified by provision and upgradeprovision. This value is used afterward by next provision to figure out if the field have been modified since last provision. :param samdb: An LDB object connect to sam.ldb :param low: The lowest USN modified by this upgrade :param high: The highest USN modified by this upgrade :param id: The invocationId of the provision""" tab = [] tab.append("%s-%s;%s" % (low, high, id)) delta = ldb.Message() delta.dn = ldb.Dn(samdb, "@PROVISION") delta[LAST_PROVISION_USN_ATTRIBUTE] = ldb.MessageElement(tab, ldb.FLAG_MOD_ADD, LAST_PROVISION_USN_ATTRIBUTE) samdb.add(delta) def get_max_usn(samdb,basedn): """ This function return the biggest USN present in the provision :param samdb: A LDB object pointing to the sam.ldb :param basedn: A string containing the base DN of the provision (ie. DC=foo, DC=bar) :return: The biggest USN in the provision""" res = samdb.search(expression="objectClass=*",base=basedn, scope=ldb.SCOPE_SUBTREE,attrs=["uSNChanged"], controls=["search_options:1:2", "server_sort:1:1:uSNChanged", "paged_results:1:1"]) return res[0]["uSNChanged"] def get_last_provision_usn(sam): """Get USNs ranges modified by a provision or an upgradeprovision :param sam: An LDB object pointing to the sam.ldb :return: a dictionary which keys are invocation id and values are an array of integer representing the different ranges """ try: entry = sam.search(expression="%s=*" % LAST_PROVISION_USN_ATTRIBUTE, base="@PROVISION", scope=ldb.SCOPE_BASE, attrs=[LAST_PROVISION_USN_ATTRIBUTE, "provisionnerID"]) except ldb.LdbError as e1: (ecode, emsg) = e1.args if ecode == ldb.ERR_NO_SUCH_OBJECT: return None raise if len(entry) > 0: myids = [] range = {} p = re.compile(r'-') if entry[0].get("provisionnerID"): for e in entry[0]["provisionnerID"]: myids.append(str(e)) for r in entry[0][LAST_PROVISION_USN_ATTRIBUTE]: tab1 = str(r).split(';') if len(tab1) == 2: id = tab1[1] else: id = "default" if (len(myids) > 0 and id not in myids): continue tab2 = p.split(tab1[0]) if range.get(id) is None: range[id] = [] range[id].append(tab2[0]) range[id].append(tab2[1]) return range else: return None class ProvisionResult(object): """Result of a provision. :ivar server_role: The server role :ivar paths: ProvisionPaths instance :ivar domaindn: The domain dn, as string """ def __init__(self): self.server_role = None self.paths = None self.domaindn = None self.lp = None self.samdb = None self.idmap = None self.names = None self.domainsid = None self.adminpass_generated = None self.adminpass = None self.backend_result = None def report_logger(self, logger): """Report this provision result to a logger.""" logger.info( "Once the above files are installed, your Samba AD server will " "be ready to use") if self.adminpass_generated: logger.info("Admin password: %s", self.adminpass) logger.info("Server Role: %s", self.server_role) logger.info("Hostname: %s", self.names.hostname) logger.info("NetBIOS Domain: %s", self.names.domain) logger.info("DNS Domain: %s", self.names.dnsdomain) logger.info("DOMAIN SID: %s", self.domainsid) if self.backend_result: self.backend_result.report_logger(logger) def check_install(lp, session_info, credentials): """Check whether the current install seems ok. :param lp: Loadparm context :param session_info: Session information :param credentials: Credentials """ if lp.get("realm") == "": raise Exception("Realm empty") samdb = Ldb(lp.samdb_url(), session_info=session_info, credentials=credentials, lp=lp) if len(samdb.search("(cn=Administrator)")) != 1: raise ProvisioningError("No administrator account found") def findnss(nssfn, names): """Find a user or group from a list of possibilities. :param nssfn: NSS Function to try (should raise KeyError if not found) :param names: Names to check. :return: Value return by first names list. """ for name in names: try: return nssfn(name) except KeyError: pass raise KeyError("Unable to find user/group in %r" % names) findnss_uid = lambda names: findnss(pwd.getpwnam, names)[2] findnss_gid = lambda names: findnss(grp.getgrnam, names)[2] def provision_paths_from_lp(lp, dnsdomain): """Set the default paths for provisioning. :param lp: Loadparm context. :param dnsdomain: DNS Domain name """ paths = ProvisionPaths() paths.private_dir = lp.get("private dir") paths.binddns_dir = lp.get("binddns dir") paths.state_dir = lp.get("state directory") # This is stored without path prefix for the "privateKeytab" attribute in # "secrets_dns.ldif". paths.dns_keytab = "dns.keytab" paths.keytab = "secrets.keytab" paths.shareconf = os.path.join(paths.private_dir, "share.ldb") paths.samdb = os.path.join(paths.private_dir, "sam.ldb") paths.idmapdb = os.path.join(paths.private_dir, "idmap.ldb") paths.secrets = os.path.join(paths.private_dir, "secrets.ldb") paths.privilege = os.path.join(paths.private_dir, "privilege.ldb") paths.dns_update_list = os.path.join(paths.private_dir, "dns_update_list") paths.spn_update_list = os.path.join(paths.private_dir, "spn_update_list") paths.krb5conf = os.path.join(paths.private_dir, "krb5.conf") paths.kdcconf = os.path.join(paths.private_dir, "kdc.conf") paths.winsdb = os.path.join(paths.private_dir, "wins.ldb") paths.s4_ldapi_path = os.path.join(paths.private_dir, "ldapi") paths.encrypted_secrets_key_path = os.path.join( paths.private_dir, "encrypted_secrets.key") paths.dns = os.path.join(paths.binddns_dir, "dns", dnsdomain + ".zone") paths.namedconf = os.path.join(paths.binddns_dir, "named.conf") paths.namedconf_update = os.path.join(paths.binddns_dir, "named.conf.update") paths.namedtxt = os.path.join(paths.binddns_dir, "named.txt") paths.hklm = "hklm.ldb" paths.hkcr = "hkcr.ldb" paths.hkcu = "hkcu.ldb" paths.hku = "hku.ldb" paths.hkpd = "hkpd.ldb" paths.hkpt = "hkpt.ldb" paths.sysvol = lp.get("path", "sysvol") paths.netlogon = lp.get("path", "netlogon") paths.smbconf = lp.configfile return paths def determine_netbios_name(hostname): """Determine a netbios name from a hostname.""" # remove forbidden chars and force the length to be <16 netbiosname = "".join([x for x in hostname if is_valid_netbios_char(x)]) return netbiosname[:MAX_NETBIOS_NAME_LEN].upper() def guess_names(lp=None, hostname=None, domain=None, dnsdomain=None, serverrole=None, rootdn=None, domaindn=None, configdn=None, schemadn=None, serverdn=None, sitename=None, domain_names_forced=False): """Guess configuration settings to use.""" if hostname is None: hostname = socket.gethostname().split(".")[0] netbiosname = lp.get("netbios name") if netbiosname is None: netbiosname = determine_netbios_name(hostname) netbiosname = netbiosname.upper() if not valid_netbios_name(netbiosname): raise InvalidNetbiosName(netbiosname) if dnsdomain is None: dnsdomain = lp.get("realm") if dnsdomain is None or dnsdomain == "": raise ProvisioningError("guess_names: 'realm' not specified in supplied %s!", lp.configfile) dnsdomain = dnsdomain.lower() if serverrole is None: serverrole = lp.get("server role") if serverrole is None: raise ProvisioningError("guess_names: 'server role' not specified in supplied %s!" % lp.configfile) serverrole = serverrole.lower() realm = dnsdomain.upper() if lp.get("realm") == "": raise ProvisioningError("guess_names: 'realm =' was not specified in supplied %s. Please remove the smb.conf file and let provision generate it" % lp.configfile) if lp.get("realm").upper() != realm: raise ProvisioningError("guess_names: 'realm=%s' in %s must match chosen realm '%s'! Please remove the smb.conf file and let provision generate it" % (lp.get("realm").upper(), lp.configfile, realm)) if lp.get("server role").lower() != serverrole: raise ProvisioningError("guess_names: 'server role=%s' in %s must match chosen server role '%s'! Please remove the smb.conf file and let provision generate it" % (lp.get("server role"), lp.configfile, serverrole)) if serverrole == "active directory domain controller": if domain is None: # This will, for better or worse, default to 'WORKGROUP' domain = lp.get("workgroup") domain = domain.upper() if lp.get("workgroup").upper() != domain: raise ProvisioningError("guess_names: Workgroup '%s' in smb.conf must match chosen domain '%s'! Please remove the %s file and let provision generate it" % (lp.get("workgroup").upper(), domain, lp.configfile)) if domaindn is None: domaindn = samba.dn_from_dns_name(dnsdomain) if domain == netbiosname: raise ProvisioningError("guess_names: Domain '%s' must not be equal to short host name '%s'!" % (domain, netbiosname)) else: domain = netbiosname if domaindn is None: domaindn = "DC=" + netbiosname if not valid_netbios_name(domain): raise InvalidNetbiosName(domain) if hostname.upper() == realm: raise ProvisioningError("guess_names: Realm '%s' must not be equal to hostname '%s'!" % (realm, hostname)) if netbiosname.upper() == realm: raise ProvisioningError("guess_names: Realm '%s' must not be equal to NetBIOS hostname '%s'!" % (realm, netbiosname)) if domain == realm and not domain_names_forced: raise ProvisioningError("guess_names: Realm '%s' must not be equal to short domain name '%s'!" % (realm, domain)) if serverrole != "active directory domain controller": # # This is the code path for a domain member # where we provision the database as if we where # on a domain controller, so we should not use # the same dnsdomain as the domain controllers # of our primary domain. # # This will be important if we start doing # SID/name filtering and reject the local # sid and names if they come from a domain # controller. # realm = netbiosname dnsdomain = netbiosname.lower() if rootdn is None: rootdn = domaindn if configdn is None: configdn = "CN=Configuration," + rootdn if schemadn is None: schemadn = "CN=Schema," + configdn if sitename is None: sitename = DEFAULTSITE names = ProvisionNames() names.rootdn = rootdn names.domaindn = domaindn names.configdn = configdn names.schemadn = schemadn names.ldapmanagerdn = "CN=Manager," + rootdn names.dnsdomain = dnsdomain names.domain = domain names.realm = realm names.netbiosname = netbiosname names.hostname = hostname names.sitename = sitename names.serverdn = "CN=%s,CN=Servers,CN=%s,CN=Sites,%s" % ( netbiosname, sitename, configdn) return names def make_smbconf(smbconf, hostname, domain, realm, targetdir, serverrole=None, eadb=False, use_ntvfs=False, lp=None, global_param=None): """Create a new smb.conf file based on a couple of basic settings. """ assert smbconf is not None if hostname is None: hostname = socket.gethostname().split(".")[0] netbiosname = determine_netbios_name(hostname) if serverrole is None: serverrole = "standalone server" assert domain is not None domain = domain.upper() assert realm is not None realm = realm.upper() global_settings = { "netbios name": netbiosname, "workgroup": domain, "realm": realm, "server role": serverrole, } if lp is None: lp = samba.param.LoadParm() #Load non-existent file if os.path.exists(smbconf): lp.load(smbconf) if global_param is not None: for ent in global_param: if global_param[ent] is not None: global_settings[ent] = " ".join(global_param[ent]) if targetdir is not None: global_settings["private dir"] = os.path.abspath(os.path.join(targetdir, "private")) global_settings["lock dir"] = os.path.abspath(targetdir) global_settings["state directory"] = os.path.abspath(os.path.join(targetdir, "state")) global_settings["cache directory"] = os.path.abspath(os.path.join(targetdir, "cache")) global_settings["binddns dir"] = os.path.abspath(os.path.join(targetdir, "bind-dns")) lp.set("lock dir", os.path.abspath(targetdir)) lp.set("state directory", global_settings["state directory"]) lp.set("cache directory", global_settings["cache directory"]) lp.set("binddns dir", global_settings["binddns dir"]) if eadb: if use_ntvfs and not lp.get("posix:eadb"): if targetdir is not None: privdir = os.path.join(targetdir, "private") else: privdir = lp.get("private dir") lp.set("posix:eadb", os.path.abspath(os.path.join(privdir, "eadb.tdb"))) elif not use_ntvfs and not lp.get("xattr_tdb:file"): if targetdir is not None: statedir = os.path.join(targetdir, "state") else: statedir = lp.get("state directory") lp.set("xattr_tdb:file", os.path.abspath(os.path.join(statedir, "xattr.tdb"))) shares = {} if serverrole == "active directory domain controller": shares["sysvol"] = os.path.join(lp.get("state directory"), "sysvol") shares["netlogon"] = os.path.join(shares["sysvol"], realm.lower(), "scripts") else: global_settings["passdb backend"] = "samba_dsdb" f = open(smbconf, 'w') try: f.write("[globals]\n") for key, val in global_settings.items(): f.write("\t%s = %s\n" % (key, val)) f.write("\n") for name, path in shares.items(): f.write("[%s]\n" % name) f.write("\tpath = %s\n" % path) f.write("\tread only = no\n") f.write("\n") finally: f.close() # reload the smb.conf lp.load(smbconf) # and dump it without any values that are the default # this ensures that any smb.conf parameters that were set # on the provision/join command line are set in the resulting smb.conf lp.dump(False, smbconf) def setup_name_mappings(idmap, sid, root_uid, nobody_uid, users_gid, root_gid): """setup reasonable name mappings for sam names to unix names. :param samdb: SamDB object. :param idmap: IDmap db object. :param sid: The domain sid. :param domaindn: The domain DN. :param root_uid: uid of the UNIX root user. :param nobody_uid: uid of the UNIX nobody user. :param users_gid: gid of the UNIX users group. :param root_gid: gid of the UNIX root group. """ idmap.setup_name_mapping("S-1-5-7", idmap.TYPE_UID, nobody_uid) idmap.setup_name_mapping(sid + "-500", idmap.TYPE_UID, root_uid) idmap.setup_name_mapping(sid + "-513", idmap.TYPE_GID, users_gid) def setup_samdb_partitions(samdb_path, logger, lp, session_info, provision_backend, names, serverrole, erase=False, plaintext_secrets=False, backend_store=None): """Setup the partitions for the SAM database. Alternatively, provision() may call this, and then populate the database. :note: This will wipe the Sam Database! :note: This function always removes the local SAM LDB file. The erase parameter controls whether to erase the existing data, which may not be stored locally but in LDAP. """ assert session_info is not None # We use options=["modules:"] to stop the modules loading - we # just want to wipe and re-initialise the database, not start it up try: os.unlink(samdb_path) except OSError: pass samdb = Ldb(url=samdb_path, session_info=session_info, lp=lp, options=["modules:"]) ldap_backend_line = "# No LDAP backend" if provision_backend.type != "ldb": ldap_backend_line = "ldapBackend: %s" % provision_backend.ldap_uri required_features = None if not plaintext_secrets: required_features = "requiredFeatures: encryptedSecrets" if backend_store is None: backend_store = get_default_backend_store() backend_store_line = "backendStore: %s" % backend_store if backend_store == "mdb": if required_features is not None: required_features += "\n" else: required_features = "" required_features += "requiredFeatures: lmdbLevelOne" if required_features is None: required_features = "# No required features" samdb.transaction_start() try: logger.info("Setting up sam.ldb partitions and settings") setup_add_ldif(samdb, setup_path("provision_partitions.ldif"), { "LDAP_BACKEND_LINE": ldap_backend_line, "BACKEND_STORE": backend_store_line }) setup_add_ldif(samdb, setup_path("provision_init.ldif"), { "BACKEND_TYPE": provision_backend.type, "SERVER_ROLE": serverrole, "REQUIRED_FEATURES": required_features }) logger.info("Setting up sam.ldb rootDSE") setup_samdb_rootdse(samdb, names) except: samdb.transaction_cancel() raise else: samdb.transaction_commit() def secretsdb_self_join(secretsdb, domain, netbiosname, machinepass, domainsid=None, realm=None, dnsdomain=None, keytab_path=None, key_version_number=1, secure_channel_type=SEC_CHAN_WKSTA): """Add domain join-specific bits to a secrets database. :param secretsdb: Ldb Handle to the secrets database :param machinepass: Machine password """ attrs = ["whenChanged", "secret", "priorSecret", "priorChanged", "krb5Keytab", "privateKeytab"] if realm is not None: if dnsdomain is None: dnsdomain = realm.lower() dnsname = '%s.%s' % (netbiosname.lower(), dnsdomain.lower()) else: dnsname = None shortname = netbiosname.lower() # We don't need to set msg["flatname"] here, because rdn_name will handle # it, and it causes problems for modifies anyway msg = ldb.Message(ldb.Dn(secretsdb, "flatname=%s,cn=Primary Domains" % domain)) msg["secureChannelType"] = [str(secure_channel_type)] msg["objectClass"] = ["top", "primaryDomain"] if dnsname is not None: msg["objectClass"] = ["top", "primaryDomain", "kerberosSecret"] msg["realm"] = [realm] msg["saltPrincipal"] = ["host/%s@%s" % (dnsname, realm.upper())] msg["msDS-KeyVersionNumber"] = [str(key_version_number)] msg["privateKeytab"] = ["secrets.keytab"] msg["secret"] = [machinepass.encode('utf-8')] msg["samAccountName"] = ["%s$" % netbiosname] msg["secureChannelType"] = [str(secure_channel_type)] if domainsid is not None: msg["objectSid"] = [ndr_pack(domainsid)] # This complex expression tries to ensure that we don't have more # than one record for this SID, realm or netbios domain at a time, # but we don't delete the old record that we are about to modify, # because that would delete the keytab and previous password. res = secretsdb.search(base="cn=Primary Domains", attrs=attrs, expression=("(&(|(flatname=%s)(realm=%s)(objectSid=%s))(objectclass=primaryDomain)(!(distinguishedName=%s)))" % (domain, realm, str(domainsid), str(msg.dn))), scope=ldb.SCOPE_ONELEVEL) for del_msg in res: secretsdb.delete(del_msg.dn) res = secretsdb.search(base=msg.dn, attrs=attrs, scope=ldb.SCOPE_BASE) if len(res) == 1: msg["priorSecret"] = [res[0]["secret"][0]] try: msg["priorWhenChanged"] = [res[0]["whenChanged"][0]] except KeyError: pass try: msg["privateKeytab"] = [res[0]["privateKeytab"][0]] except KeyError: pass try: msg["krb5Keytab"] = [res[0]["krb5Keytab"][0]] except KeyError: pass for el in msg: if el != 'dn': msg[el].set_flags(ldb.FLAG_MOD_REPLACE) secretsdb.modify(msg) secretsdb.rename(res[0].dn, msg.dn) else: spn = [ 'HOST/%s' % shortname ] if secure_channel_type == SEC_CHAN_BDC and dnsname is not None: # we are a domain controller then we add servicePrincipalName # entries for the keytab code to update. spn.extend([ 'HOST/%s' % dnsname ]) msg["servicePrincipalName"] = spn secretsdb.add(msg) def setup_secretsdb(paths, session_info, backend_credentials, lp): """Setup the secrets database. :note: This function does not handle exceptions and transaction on purpose, it's up to the caller to do this job. :param path: Path to the secrets database. :param session_info: Session info. :param credentials: Credentials :param lp: Loadparm context :return: LDB handle for the created secrets database """ if os.path.exists(paths.secrets): os.unlink(paths.secrets) keytab_path = os.path.join(paths.private_dir, paths.keytab) if os.path.exists(keytab_path): os.unlink(keytab_path) bind_dns_keytab_path = os.path.join(paths.binddns_dir, paths.dns_keytab) if os.path.exists(bind_dns_keytab_path): os.unlink(bind_dns_keytab_path) dns_keytab_path = os.path.join(paths.private_dir, paths.dns_keytab) if os.path.exists(dns_keytab_path): os.unlink(dns_keytab_path) path = paths.secrets secrets_ldb = Ldb(path, session_info=session_info, lp=lp) secrets_ldb.erase() secrets_ldb.load_ldif_file_add(setup_path("secrets_init.ldif")) secrets_ldb = Ldb(path, session_info=session_info, lp=lp) secrets_ldb.transaction_start() try: secrets_ldb.load_ldif_file_add(setup_path("secrets.ldif")) if (backend_credentials is not None and backend_credentials.authentication_requested()): if backend_credentials.get_bind_dn() is not None: setup_add_ldif(secrets_ldb, setup_path("secrets_simple_ldap.ldif"), { "LDAPMANAGERDN": backend_credentials.get_bind_dn(), "LDAPMANAGERPASS_B64": b64encode(backend_credentials.get_password()).decode('utf8') }) else: setup_add_ldif(secrets_ldb, setup_path("secrets_sasl_ldap.ldif"), { "LDAPADMINUSER": backend_credentials.get_username(), "LDAPADMINREALM": backend_credentials.get_realm(), "LDAPADMINPASS_B64": b64encode(backend_credentials.get_password()).decode('utf8') }) except: secrets_ldb.transaction_cancel() raise return secrets_ldb def setup_privileges(path, session_info, lp): """Setup the privileges database. :param path: Path to the privileges database. :param session_info: Session info. :param credentials: Credentials :param lp: Loadparm context :return: LDB handle for the created secrets database """ if os.path.exists(path): os.unlink(path) privilege_ldb = Ldb(path, session_info=session_info, lp=lp) privilege_ldb.erase() privilege_ldb.load_ldif_file_add(setup_path("provision_privilege.ldif")) def setup_encrypted_secrets_key(path): """Setup the encrypted secrets key file. Any existing key file will be deleted and a new random key generated. :param path: Path to the secrets key file. """ if os.path.exists(path): os.unlink(path) flags = os.O_WRONLY | os.O_CREAT | os.O_EXCL mode = stat.S_IRUSR | stat.S_IWUSR umask_original = os.umask(0) try: fd = os.open(path, flags, mode) finally: os.umask(umask_original) with os.fdopen(fd, 'w') as f: key = samba.generate_random_bytes(16) f.write(key) def setup_registry(path, session_info, lp): """Setup the registry. :param path: Path to the registry database :param session_info: Session information :param credentials: Credentials :param lp: Loadparm context """ reg = samba.registry.Registry() hive = samba.registry.open_ldb(path, session_info=session_info, lp_ctx=lp) reg.mount_hive(hive, samba.registry.HKEY_LOCAL_MACHINE) provision_reg = setup_path("provision.reg") assert os.path.exists(provision_reg) reg.diff_apply(provision_reg) def setup_idmapdb(path, session_info, lp): """Setup the idmap database. :param path: path to the idmap database :param session_info: Session information :param credentials: Credentials :param lp: Loadparm context """ if os.path.exists(path): os.unlink(path) idmap_ldb = IDmapDB(path, session_info=session_info, lp=lp) idmap_ldb.erase() idmap_ldb.load_ldif_file_add(setup_path("idmap_init.ldif")) return idmap_ldb def setup_samdb_rootdse(samdb, names): """Setup the SamDB rootdse. :param samdb: Sam Database handle """ setup_add_ldif(samdb, setup_path("provision_rootdse_add.ldif"), { "SCHEMADN": names.schemadn, "DOMAINDN": names.domaindn, "ROOTDN" : names.rootdn, "CONFIGDN": names.configdn, "SERVERDN": names.serverdn, }) def setup_self_join(samdb, admin_session_info, names, fill, machinepass, dns_backend, dnspass, domainsid, next_rid, invocationid, policyguid, policyguid_dc, domainControllerFunctionality, ntdsguid=None, dc_rid=None): """Join a host to its own domain.""" assert isinstance(invocationid, str) if ntdsguid is not None: ntdsguid_line = "objectGUID: %s\n"%ntdsguid else: ntdsguid_line = "" if dc_rid is None: dc_rid = next_rid setup_add_ldif(samdb, setup_path("provision_self_join.ldif"), { "CONFIGDN": names.configdn, "SCHEMADN": names.schemadn, "DOMAINDN": names.domaindn, "SERVERDN": names.serverdn, "INVOCATIONID": invocationid, "NETBIOSNAME": names.netbiosname, "DNSNAME": "%s.%s" % (names.hostname, names.dnsdomain), "MACHINEPASS_B64": b64encode(machinepass.encode('utf-16-le')).decode('utf8'), "DOMAINSID": str(domainsid), "DCRID": str(dc_rid), "SAMBA_VERSION_STRING": version, "NTDSGUID": ntdsguid_line, "DOMAIN_CONTROLLER_FUNCTIONALITY": str( domainControllerFunctionality), "RIDALLOCATIONSTART": str(next_rid + 100), "RIDALLOCATIONEND": str(next_rid + 100 + 499)}) setup_add_ldif(samdb, setup_path("provision_group_policy.ldif"), { "POLICYGUID": policyguid, "POLICYGUID_DC": policyguid_dc, "DNSDOMAIN": names.dnsdomain, "DOMAINDN": names.domaindn}) # If we are setting up a subdomain, then this has been replicated in, so we # don't need to add it if fill == FILL_FULL: setup_add_ldif(samdb, setup_path("provision_self_join_config.ldif"), { "CONFIGDN": names.configdn, "SCHEMADN": names.schemadn, "DOMAINDN": names.domaindn, "SERVERDN": names.serverdn, "INVOCATIONID": invocationid, "NETBIOSNAME": names.netbiosname, "DNSNAME": "%s.%s" % (names.hostname, names.dnsdomain), "MACHINEPASS_B64": b64encode(machinepass.encode('utf-16-le')).decode('utf8'), "DOMAINSID": str(domainsid), "DCRID": str(dc_rid), "SAMBA_VERSION_STRING": version, "NTDSGUID": ntdsguid_line, "DOMAIN_CONTROLLER_FUNCTIONALITY": str( domainControllerFunctionality)}) # Setup fSMORoleOwner entries to point at the newly created DC entry setup_modify_ldif(samdb, setup_path("provision_self_join_modify_config.ldif"), { "CONFIGDN": names.configdn, "SCHEMADN": names.schemadn, "DEFAULTSITE": names.sitename, "NETBIOSNAME": names.netbiosname, "SERVERDN": names.serverdn, }) system_session_info = system_session() samdb.set_session_info(system_session_info) # Setup fSMORoleOwner entries to point at the newly created DC entry to # modify a serverReference under cn=config when we are a subdomain, we must # be system due to ACLs setup_modify_ldif(samdb, setup_path("provision_self_join_modify.ldif"), { "DOMAINDN": names.domaindn, "SERVERDN": names.serverdn, "NETBIOSNAME": names.netbiosname, }) samdb.set_session_info(admin_session_info) if dns_backend != "SAMBA_INTERNAL": # This is Samba4 specific and should be replaced by the correct # DNS AD-style setup setup_add_ldif(samdb, setup_path("provision_dns_add_samba.ldif"), { "DNSDOMAIN": names.dnsdomain, "DOMAINDN": names.domaindn, "DNSPASS_B64": b64encode(dnspass.encode('utf-16-le')).decode('utf8'), "HOSTNAME" : names.hostname, "DNSNAME" : '%s.%s' % ( names.netbiosname.lower(), names.dnsdomain.lower()) }) def getpolicypath(sysvolpath, dnsdomain, guid): """Return the physical path of policy given its guid. :param sysvolpath: Path to the sysvol folder :param dnsdomain: DNS name of the AD domain :param guid: The GUID of the policy :return: A string with the complete path to the policy folder """ if guid[0] != "{": guid = "{%s}" % guid policy_path = os.path.join(sysvolpath, dnsdomain, "Policies", guid) return policy_path def create_gpo_struct(policy_path): if not os.path.exists(policy_path): os.makedirs(policy_path, 0o775) f = open(os.path.join(policy_path, "GPT.INI"), 'w') try: f.write("[General]\r\nVersion=0") finally: f.close() p = os.path.join(policy_path, "MACHINE") if not os.path.exists(p): os.makedirs(p, 0o775) p = os.path.join(policy_path, "USER") if not os.path.exists(p): os.makedirs(p, 0o775) def create_default_gpo(sysvolpath, dnsdomain, policyguid, policyguid_dc): """Create the default GPO for a domain :param sysvolpath: Physical path for the sysvol folder :param dnsdomain: DNS domain name of the AD domain :param policyguid: GUID of the default domain policy :param policyguid_dc: GUID of the default domain controler policy """ policy_path = getpolicypath(sysvolpath,dnsdomain,policyguid) create_gpo_struct(policy_path) policy_path = getpolicypath(sysvolpath,dnsdomain,policyguid_dc) create_gpo_struct(policy_path) def setup_samdb(path, session_info, provision_backend, lp, names, logger, fill, serverrole, schema, am_rodc=False, plaintext_secrets=False, backend_store=None): """Setup a complete SAM Database. :note: This will wipe the main SAM database file! """ # Also wipes the database setup_samdb_partitions(path, logger=logger, lp=lp, provision_backend=provision_backend, session_info=session_info, names=names, serverrole=serverrole, plaintext_secrets=plaintext_secrets, backend_store=backend_store) # Load the database, but don's load the global schema and don't connect # quite yet samdb = SamDB(session_info=session_info, url=None, auto_connect=False, credentials=provision_backend.credentials, lp=lp, global_schema=False, am_rodc=am_rodc) logger.info("Pre-loading the Samba 4 and AD schema") # Load the schema from the one we computed earlier samdb.set_schema(schema, write_indices_and_attributes=False) # Set the NTDS settings DN manually - in order to have it already around # before the provisioned tree exists and we connect samdb.set_ntds_settings_dn("CN=NTDS Settings,%s" % names.serverdn) # And now we can connect to the DB - the schema won't be loaded from the # DB try: samdb.connect(path) except ldb.LdbError as e2: (num, string_error) = e2.args if (num == ldb.ERR_INSUFFICIENT_ACCESS_RIGHTS): raise ProvisioningError("Permission denied connecting to %s, are you running as root?" % path) else: raise # But we have to give it one more kick to have it use the schema # during provision - it needs, now that it is connected, to write # the schema @ATTRIBUTES and @INDEXLIST records to the database. samdb.set_schema(schema, write_indices_and_attributes=True) return samdb def fill_samdb(samdb, lp, names, logger, policyguid, policyguid_dc, fill, adminpass, krbtgtpass, machinepass, dns_backend, dnspass, invocationid, ntdsguid, serverrole, am_rodc=False, dom_for_fun_level=None, schema=None, next_rid=None, dc_rid=None, backend_store=None): if next_rid is None: next_rid = 1000 # Provision does not make much sense values larger than 1000000000 # as the upper range of the rIDAvailablePool is 1073741823 and # we don't want to create a domain that cannot allocate rids. if next_rid < 1000 or next_rid > 1000000000: error = "You want to run SAMBA 4 with a next_rid of %u, " % (next_rid) error += "the valid range is %u-%u. The default is %u." % ( 1000, 1000000000, 1000) raise ProvisioningError(error) # ATTENTION: Do NOT change these default values without discussion with the # team and/or release manager. They have a big impact on the whole program! domainControllerFunctionality = DS_DOMAIN_FUNCTION_2008_R2 if dom_for_fun_level is None: dom_for_fun_level = DS_DOMAIN_FUNCTION_2008_R2 if dom_for_fun_level > domainControllerFunctionality: raise ProvisioningError("You want to run SAMBA 4 on a domain and forest function level which itself is higher than its actual DC function level (2008_R2). This won't work!") domainFunctionality = dom_for_fun_level forestFunctionality = dom_for_fun_level # Set the NTDS settings DN manually - in order to have it already around # before the provisioned tree exists and we connect samdb.set_ntds_settings_dn("CN=NTDS Settings,%s" % names.serverdn) # Set the domain functionality levels onto the database. # Various module (the password_hash module in particular) need # to know what level of AD we are emulating. # These will be fixed into the database via the database # modifictions below, but we need them set from the start. samdb.set_opaque_integer("domainFunctionality", domainFunctionality) samdb.set_opaque_integer("forestFunctionality", forestFunctionality) samdb.set_opaque_integer("domainControllerFunctionality", domainControllerFunctionality) samdb.set_domain_sid(str(names.domainsid)) samdb.set_invocation_id(invocationid) logger.info("Adding DomainDN: %s" % names.domaindn) # impersonate domain admin admin_session_info = admin_session(lp, str(names.domainsid)) samdb.set_session_info(admin_session_info) if names.domainguid is not None: domainguid_line = "objectGUID: %s\n-" % names.domainguid else: domainguid_line = "" descr = b64encode(get_domain_descriptor(names.domainsid)).decode('utf8') setup_add_ldif(samdb, setup_path("provision_basedn.ldif"), { "DOMAINDN": names.domaindn, "DOMAINSID": str(names.domainsid), "DESCRIPTOR": descr, "DOMAINGUID": domainguid_line }) setup_modify_ldif(samdb, setup_path("provision_basedn_modify.ldif"), { "DOMAINDN": names.domaindn, "CREATTIME": str(samba.unix2nttime(int(time.time()))), "NEXTRID": str(next_rid), "DEFAULTSITE": names.sitename, "CONFIGDN": names.configdn, "POLICYGUID": policyguid, "DOMAIN_FUNCTIONALITY": str(domainFunctionality), "SAMBA_VERSION_STRING": version, "MIN_PWD_LENGTH": str(DEFAULT_MIN_PWD_LENGTH) }) # If we are setting up a subdomain, then this has been replicated in, so we don't need to add it if fill == FILL_FULL: logger.info("Adding configuration container") descr = b64encode(get_config_descriptor(names.domainsid)).decode('utf8') setup_add_ldif(samdb, setup_path("provision_configuration_basedn.ldif"), { "CONFIGDN": names.configdn, "DESCRIPTOR": descr, }) # The LDIF here was created when the Schema object was constructed ignore_checks_oid = "local_oid:%s:0" % samba.dsdb.DSDB_CONTROL_SKIP_DUPLICATES_CHECK_OID logger.info("Setting up sam.ldb schema") samdb.add_ldif(schema.schema_dn_add, controls=["relax:0", ignore_checks_oid]) samdb.modify_ldif(schema.schema_dn_modify, controls=[ignore_checks_oid]) samdb.write_prefixes_from_schema() samdb.add_ldif(schema.schema_data, controls=["relax:0", ignore_checks_oid]) setup_add_ldif(samdb, setup_path("aggregate_schema.ldif"), {"SCHEMADN": names.schemadn}, controls=["relax:0", ignore_checks_oid]) # Now register this container in the root of the forest msg = ldb.Message(ldb.Dn(samdb, names.domaindn)) msg["subRefs"] = ldb.MessageElement(names.configdn , ldb.FLAG_MOD_ADD, "subRefs") samdb.invocation_id = invocationid # If we are setting up a subdomain, then this has been replicated in, so we don't need to add it if fill == FILL_FULL: logger.info("Setting up sam.ldb configuration data") partitions_descr = b64encode(get_config_partitions_descriptor(names.domainsid)).decode('utf8') sites_descr = b64encode(get_config_sites_descriptor(names.domainsid)).decode('utf8') ntdsquotas_descr = b64encode(get_config_ntds_quotas_descriptor(names.domainsid)).decode('utf8') protected1_descr = b64encode(get_config_delete_protected1_descriptor(names.domainsid)).decode('utf8') protected1wd_descr = b64encode(get_config_delete_protected1wd_descriptor(names.domainsid)).decode('utf8') protected2_descr = b64encode(get_config_delete_protected2_descriptor(names.domainsid)).decode('utf8') if "2008" in schema.base_schema: # exclude 2012-specific changes if we're using a 2008 schema incl_2012 = "#" else: incl_2012 = "" setup_add_ldif(samdb, setup_path("provision_configuration.ldif"), { "CONFIGDN": names.configdn, "NETBIOSNAME": names.netbiosname, "DEFAULTSITE": names.sitename, "DNSDOMAIN": names.dnsdomain, "DOMAIN": names.domain, "SCHEMADN": names.schemadn, "DOMAINDN": names.domaindn, "SERVERDN": names.serverdn, "FOREST_FUNCTIONALITY": str(forestFunctionality), "DOMAIN_FUNCTIONALITY": str(domainFunctionality), "NTDSQUOTAS_DESCRIPTOR": ntdsquotas_descr, "LOSTANDFOUND_DESCRIPTOR": protected1wd_descr, "SERVICES_DESCRIPTOR": protected1_descr, "PHYSICALLOCATIONS_DESCRIPTOR": protected1wd_descr, "FORESTUPDATES_DESCRIPTOR": protected1wd_descr, "EXTENDEDRIGHTS_DESCRIPTOR": protected2_descr, "PARTITIONS_DESCRIPTOR": partitions_descr, "SITES_DESCRIPTOR": sites_descr, }) setup_add_ldif(samdb, setup_path("extended-rights.ldif"), { "CONFIGDN": names.configdn, "INC2012" : incl_2012, }) logger.info("Setting up display specifiers") display_specifiers_ldif = read_ms_ldif( setup_path('display-specifiers/DisplaySpecifiers-Win2k8R2.txt')) display_specifiers_ldif = substitute_var(display_specifiers_ldif, {"CONFIGDN": names.configdn}) check_all_substituted(display_specifiers_ldif) samdb.add_ldif(display_specifiers_ldif) logger.info("Modifying display specifiers and extended rights") setup_modify_ldif(samdb, setup_path("provision_configuration_modify.ldif"), { "CONFIGDN": names.configdn, "DISPLAYSPECIFIERS_DESCRIPTOR": protected2_descr }) logger.info("Adding users container") users_desc = b64encode(get_domain_users_descriptor(names.domainsid)).decode('utf8') setup_add_ldif(samdb, setup_path("provision_users_add.ldif"), { "DOMAINDN": names.domaindn, "USERS_DESCRIPTOR": users_desc }) logger.info("Modifying users container") setup_modify_ldif(samdb, setup_path("provision_users_modify.ldif"), { "DOMAINDN": names.domaindn}) logger.info("Adding computers container") computers_desc = b64encode(get_domain_computers_descriptor(names.domainsid)).decode('utf8') setup_add_ldif(samdb, setup_path("provision_computers_add.ldif"), { "DOMAINDN": names.domaindn, "COMPUTERS_DESCRIPTOR": computers_desc }) logger.info("Modifying computers container") setup_modify_ldif(samdb, setup_path("provision_computers_modify.ldif"), { "DOMAINDN": names.domaindn}) logger.info("Setting up sam.ldb data") infrastructure_desc = b64encode(get_domain_infrastructure_descriptor(names.domainsid)).decode('utf8') lostandfound_desc = b64encode(get_domain_delete_protected2_descriptor(names.domainsid)).decode('utf8') system_desc = b64encode(get_domain_delete_protected1_descriptor(names.domainsid)).decode('utf8') builtin_desc = b64encode(get_domain_builtin_descriptor(names.domainsid)).decode('utf8') controllers_desc = b64encode(get_domain_controllers_descriptor(names.domainsid)).decode('utf8') setup_add_ldif(samdb, setup_path("provision.ldif"), { "CREATTIME": str(samba.unix2nttime(int(time.time()))), "DOMAINDN": names.domaindn, "NETBIOSNAME": names.netbiosname, "DEFAULTSITE": names.sitename, "CONFIGDN": names.configdn, "SERVERDN": names.serverdn, "RIDAVAILABLESTART": str(next_rid + 600), "POLICYGUID_DC": policyguid_dc, "INFRASTRUCTURE_DESCRIPTOR": infrastructure_desc, "LOSTANDFOUND_DESCRIPTOR": lostandfound_desc, "SYSTEM_DESCRIPTOR": system_desc, "BUILTIN_DESCRIPTOR": builtin_desc, "DOMAIN_CONTROLLERS_DESCRIPTOR": controllers_desc, }) # If we are setting up a subdomain, then this has been replicated in, so we don't need to add it if fill == FILL_FULL: managedservice_descr = b64encode(get_managed_service_accounts_descriptor(names.domainsid)).decode('utf8') setup_modify_ldif(samdb, setup_path("provision_configuration_references.ldif"), { "CONFIGDN": names.configdn, "SCHEMADN": names.schemadn}) logger.info("Setting up well known security principals") protected1wd_descr = b64encode(get_config_delete_protected1wd_descriptor(names.domainsid)).decode('utf8') setup_add_ldif(samdb, setup_path("provision_well_known_sec_princ.ldif"), { "CONFIGDN": names.configdn, "WELLKNOWNPRINCIPALS_DESCRIPTOR": protected1wd_descr, }, controls=["relax:0", "provision:0"]) if fill == FILL_FULL or fill == FILL_SUBDOMAIN: setup_modify_ldif(samdb, setup_path("provision_basedn_references.ldif"), { "DOMAINDN": names.domaindn, "MANAGEDSERVICE_DESCRIPTOR": managedservice_descr }) logger.info("Setting up sam.ldb users and groups") setup_add_ldif(samdb, setup_path("provision_users.ldif"), { "DOMAINDN": names.domaindn, "DOMAINSID": str(names.domainsid), "ADMINPASS_B64": b64encode(adminpass.encode('utf-16-le')).decode('utf8'), "KRBTGTPASS_B64": b64encode(krbtgtpass.encode('utf-16-le')).decode('utf8') }, controls=["relax:0", "provision:0"]) logger.info("Setting up self join") setup_self_join(samdb, admin_session_info, names=names, fill=fill, invocationid=invocationid, dns_backend=dns_backend, dnspass=dnspass, machinepass=machinepass, domainsid=names.domainsid, next_rid=next_rid, dc_rid=dc_rid, policyguid=policyguid, policyguid_dc=policyguid_dc, domainControllerFunctionality=domainControllerFunctionality, ntdsguid=ntdsguid) ntds_dn = "CN=NTDS Settings,%s" % names.serverdn names.ntdsguid = samdb.searchone(basedn=ntds_dn, attribute="objectGUID", expression="", scope=ldb.SCOPE_BASE) assert isinstance(names.ntdsguid, str) return samdb SYSVOL_ACL = "O:LAG:BAD:P(A;OICI;0x001f01ff;;;BA)(A;OICI;0x001200a9;;;SO)(A;OICI;0x001f01ff;;;SY)(A;OICI;0x001200a9;;;AU)" POLICIES_ACL = "O:LAG:BAD:P(A;OICI;0x001f01ff;;;BA)(A;OICI;0x001200a9;;;SO)(A;OICI;0x001f01ff;;;SY)(A;OICI;0x001200a9;;;AU)(A;OICI;0x001301bf;;;PA)" SYSVOL_SERVICE="sysvol" def set_dir_acl(path, acl, lp, domsid, use_ntvfs, passdb, service=SYSVOL_SERVICE): setntacl(lp, path, acl, domsid, use_ntvfs=use_ntvfs, skip_invalid_chown=True, passdb=passdb, service=service) for root, dirs, files in os.walk(path, topdown=False): for name in files: setntacl(lp, os.path.join(root, name), acl, domsid, use_ntvfs=use_ntvfs, skip_invalid_chown=True, passdb=passdb, service=service) for name in dirs: setntacl(lp, os.path.join(root, name), acl, domsid, use_ntvfs=use_ntvfs, skip_invalid_chown=True, passdb=passdb, service=service) def set_gpos_acl(sysvol, dnsdomain, domainsid, domaindn, samdb, lp, use_ntvfs, passdb): """Set ACL on the sysvol//Policies folder and the policy folders beneath. :param sysvol: Physical path for the sysvol folder :param dnsdomain: The DNS name of the domain :param domainsid: The SID of the domain :param domaindn: The DN of the domain (ie. DC=...) :param samdb: An LDB object on the SAM db :param lp: an LP object """ # Set ACL for GPO root folder root_policy_path = os.path.join(sysvol, dnsdomain, "Policies") setntacl(lp, root_policy_path, POLICIES_ACL, str(domainsid), use_ntvfs=use_ntvfs, skip_invalid_chown=True, passdb=passdb, service=SYSVOL_SERVICE) res = samdb.search(base="CN=Policies,CN=System,%s"%(domaindn), attrs=["cn", "nTSecurityDescriptor"], expression="", scope=ldb.SCOPE_ONELEVEL) for policy in res: acl = ndr_unpack(security.descriptor, str(policy["nTSecurityDescriptor"])).as_sddl() policy_path = getpolicypath(sysvol, dnsdomain, str(policy["cn"])) set_dir_acl(policy_path, dsacl2fsacl(acl, domainsid), lp, str(domainsid), use_ntvfs, passdb=passdb) def setsysvolacl(samdb, netlogon, sysvol, uid, gid, domainsid, dnsdomain, domaindn, lp, use_ntvfs): """Set the ACL for the sysvol share and the subfolders :param samdb: An LDB object on the SAM db :param netlogon: Physical path for the netlogon folder :param sysvol: Physical path for the sysvol folder :param uid: The UID of the "Administrator" user :param gid: The GID of the "Domain adminstrators" group :param domainsid: The SID of the domain :param dnsdomain: The DNS name of the domain :param domaindn: The DN of the domain (ie. DC=...) """ s4_passdb = None if not use_ntvfs: s3conf = s3param.get_context() s3conf.load(lp.configfile) file = tempfile.NamedTemporaryFile(dir=os.path.abspath(sysvol)) try: try: smbd.set_simple_acl(file.name, 0o755, gid) except OSError: if not smbd.have_posix_acls(): # This clue is only strictly correct for RPM and # Debian-like Linux systems, but hopefully other users # will get enough clue from it. raise ProvisioningError("Samba was compiled without the posix ACL support that s3fs requires. " "Try installing libacl1-dev or libacl-devel, then re-run configure and make.") raise ProvisioningError("Your filesystem or build does not support posix ACLs, which s3fs requires. " "Try the mounting the filesystem with the 'acl' option.") try: smbd.chown(file.name, uid, gid) except OSError: raise ProvisioningError("Unable to chown a file on your filesystem. " "You may not be running provision as root.") finally: file.close() # This will ensure that the smbd code we are running when setting ACLs # is initialised with the smb.conf s3conf = s3param.get_context() s3conf.load(lp.configfile) # ensure we are using the right samba_dsdb passdb backend, no matter what s3conf.set("passdb backend", "samba_dsdb:%s" % samdb.url) passdb.reload_static_pdb() # ensure that we init the samba_dsdb backend, so the domain sid is # marked in secrets.tdb s4_passdb = passdb.PDB(s3conf.get("passdb backend")) # now ensure everything matches correctly, to avoid wierd issues if passdb.get_global_sam_sid() != domainsid: raise ProvisioningError('SID as seen by smbd [%s] does not match SID as seen by the provision script [%s]!' % (passdb.get_global_sam_sid(), domainsid)) domain_info = s4_passdb.domain_info() if domain_info["dom_sid"] != domainsid: raise ProvisioningError('SID as seen by pdb_samba_dsdb [%s] does not match SID as seen by the provision script [%s]!' % (domain_info["dom_sid"], domainsid)) if domain_info["dns_domain"].upper() != dnsdomain.upper(): raise ProvisioningError('Realm as seen by pdb_samba_dsdb [%s] does not match Realm as seen by the provision script [%s]!' % (domain_info["dns_domain"].upper(), dnsdomain.upper())) try: if use_ntvfs: os.chown(sysvol, -1, gid) except OSError: canchown = False else: canchown = True # Set the SYSVOL_ACL on the sysvol folder and subfolder (first level) setntacl(lp,sysvol, SYSVOL_ACL, str(domainsid), use_ntvfs=use_ntvfs, skip_invalid_chown=True, passdb=s4_passdb, service=SYSVOL_SERVICE) for root, dirs, files in os.walk(sysvol, topdown=False): for name in files: if use_ntvfs and canchown: os.chown(os.path.join(root, name), -1, gid) setntacl(lp, os.path.join(root, name), SYSVOL_ACL, str(domainsid), use_ntvfs=use_ntvfs, skip_invalid_chown=True, passdb=s4_passdb, service=SYSVOL_SERVICE) for name in dirs: if use_ntvfs and canchown: os.chown(os.path.join(root, name), -1, gid) setntacl(lp, os.path.join(root, name), SYSVOL_ACL, str(domainsid), use_ntvfs=use_ntvfs, skip_invalid_chown=True, passdb=s4_passdb, service=SYSVOL_SERVICE) # Set acls on Policy folder and policies folders set_gpos_acl(sysvol, dnsdomain, domainsid, domaindn, samdb, lp, use_ntvfs, passdb=s4_passdb) def acl_type(direct_db_access): if direct_db_access: return "DB" else: return "VFS" def check_dir_acl(path, acl, lp, domainsid, direct_db_access): fsacl = getntacl(lp, path, direct_db_access=direct_db_access, service=SYSVOL_SERVICE) fsacl_sddl = fsacl.as_sddl(domainsid) if fsacl_sddl != acl: raise ProvisioningError('%s ACL on GPO directory %s %s does not match expected value %s from GPO object' % (acl_type(direct_db_access), path, fsacl_sddl, acl)) for root, dirs, files in os.walk(path, topdown=False): for name in files: fsacl = getntacl(lp, os.path.join(root, name), direct_db_access=direct_db_access, service=SYSVOL_SERVICE) if fsacl is None: raise ProvisioningError('%s ACL on GPO file %s %s not found!' % (acl_type(direct_db_access), os.path.join(root, name))) fsacl_sddl = fsacl.as_sddl(domainsid) if fsacl_sddl != acl: raise ProvisioningError('%s ACL on GPO file %s %s does not match expected value %s from GPO object' % (acl_type(direct_db_access), os.path.join(root, name), fsacl_sddl, acl)) for name in dirs: fsacl = getntacl(lp, os.path.join(root, name), direct_db_access=direct_db_access, service=SYSVOL_SERVICE) if fsacl is None: raise ProvisioningError('%s ACL on GPO directory %s %s not found!' % (acl_type(direct_db_access), os.path.join(root, name))) fsacl_sddl = fsacl.as_sddl(domainsid) if fsacl_sddl != acl: raise ProvisioningError('%s ACL on GPO directory %s %s does not match expected value %s from GPO object' % (acl_type(direct_db_access), os.path.join(root, name), fsacl_sddl, acl)) def check_gpos_acl(sysvol, dnsdomain, domainsid, domaindn, samdb, lp, direct_db_access): """Set ACL on the sysvol//Policies folder and the policy folders beneath. :param sysvol: Physical path for the sysvol folder :param dnsdomain: The DNS name of the domain :param domainsid: The SID of the domain :param domaindn: The DN of the domain (ie. DC=...) :param samdb: An LDB object on the SAM db :param lp: an LP object """ # Set ACL for GPO root folder root_policy_path = os.path.join(sysvol, dnsdomain, "Policies") fsacl = getntacl(lp, root_policy_path, direct_db_access=direct_db_access, service=SYSVOL_SERVICE) if fsacl is None: raise ProvisioningError('DB ACL on policy root %s %s not found!' % (acl_type(direct_db_access), root_policy_path)) fsacl_sddl = fsacl.as_sddl(domainsid) if fsacl_sddl != POLICIES_ACL: raise ProvisioningError('%s ACL on policy root %s %s does not match expected value %s from provision' % (acl_type(direct_db_access), root_policy_path, fsacl_sddl, fsacl)) res = samdb.search(base="CN=Policies,CN=System,%s"%(domaindn), attrs=["cn", "nTSecurityDescriptor"], expression="", scope=ldb.SCOPE_ONELEVEL) for policy in res: acl = ndr_unpack(security.descriptor, str(policy["nTSecurityDescriptor"])).as_sddl() policy_path = getpolicypath(sysvol, dnsdomain, str(policy["cn"])) check_dir_acl(policy_path, dsacl2fsacl(acl, domainsid), lp, domainsid, direct_db_access) def checksysvolacl(samdb, netlogon, sysvol, domainsid, dnsdomain, domaindn, lp): """Set the ACL for the sysvol share and the subfolders :param samdb: An LDB object on the SAM db :param netlogon: Physical path for the netlogon folder :param sysvol: Physical path for the sysvol folder :param uid: The UID of the "Administrator" user :param gid: The GID of the "Domain adminstrators" group :param domainsid: The SID of the domain :param dnsdomain: The DNS name of the domain :param domaindn: The DN of the domain (ie. DC=...) """ # This will ensure that the smbd code we are running when setting ACLs is initialised with the smb.conf s3conf = s3param.get_context() s3conf.load(lp.configfile) # ensure we are using the right samba_dsdb passdb backend, no matter what s3conf.set("passdb backend", "samba_dsdb:%s" % samdb.url) # ensure that we init the samba_dsdb backend, so the domain sid is marked in secrets.tdb s4_passdb = passdb.PDB(s3conf.get("passdb backend")) # now ensure everything matches correctly, to avoid wierd issues if passdb.get_global_sam_sid() != domainsid: raise ProvisioningError('SID as seen by smbd [%s] does not match SID as seen by the provision script [%s]!' % (passdb.get_global_sam_sid(), domainsid)) domain_info = s4_passdb.domain_info() if domain_info["dom_sid"] != domainsid: raise ProvisioningError('SID as seen by pdb_samba_dsdb [%s] does not match SID as seen by the provision script [%s]!' % (domain_info["dom_sid"], domainsid)) if domain_info["dns_domain"].upper() != dnsdomain.upper(): raise ProvisioningError('Realm as seen by pdb_samba_dsdb [%s] does not match Realm as seen by the provision script [%s]!' % (domain_info["dns_domain"].upper(), dnsdomain.upper())) # Ensure we can read this directly, and via the smbd VFS for direct_db_access in [True, False]: # Check the SYSVOL_ACL on the sysvol folder and subfolder (first level) for dir_path in [os.path.join(sysvol, dnsdomain), netlogon]: fsacl = getntacl(lp, dir_path, direct_db_access=direct_db_access, service=SYSVOL_SERVICE) if fsacl is None: raise ProvisioningError('%s ACL on sysvol directory %s not found!' % (acl_type(direct_db_access), dir_path)) fsacl_sddl = fsacl.as_sddl(domainsid) if fsacl_sddl != SYSVOL_ACL: raise ProvisioningError('%s ACL on sysvol directory %s %s does not match expected value %s from provision' % (acl_type(direct_db_access), dir_path, fsacl_sddl, SYSVOL_ACL)) # Check acls on Policy folder and policies folders check_gpos_acl(sysvol, dnsdomain, domainsid, domaindn, samdb, lp, direct_db_access) def interface_ips_v4(lp): """return only IPv4 IPs""" ips = samba.interface_ips(lp, False) ret = [] for i in ips: if i.find(':') == -1: ret.append(i) return ret def interface_ips_v6(lp): """return only IPv6 IPs""" ips = samba.interface_ips(lp, False) ret = [] for i in ips: if i.find(':') != -1: ret.append(i) return ret def provision_fill(samdb, secrets_ldb, logger, names, paths, schema=None, targetdir=None, samdb_fill=FILL_FULL, hostip=None, hostip6=None, next_rid=1000, dc_rid=None, adminpass=None, krbtgtpass=None, domainguid=None, policyguid=None, policyguid_dc=None, invocationid=None, machinepass=None, ntdsguid=None, dns_backend=None, dnspass=None, serverrole=None, dom_for_fun_level=None, am_rodc=False, lp=None, use_ntvfs=False, skip_sysvolacl=False, backend_store=None): # create/adapt the group policy GUIDs # Default GUID for default policy are described at # "How Core Group Policy Works" # http://technet.microsoft.com/en-us/library/cc784268%28WS.10%29.aspx if policyguid is None: policyguid = DEFAULT_POLICY_GUID policyguid = policyguid.upper() if policyguid_dc is None: policyguid_dc = DEFAULT_DC_POLICY_GUID policyguid_dc = policyguid_dc.upper() if invocationid is None: invocationid = str(uuid.uuid4()) if krbtgtpass is None: krbtgtpass = samba.generate_random_machine_password(128, 255) if machinepass is None: machinepass = samba.generate_random_machine_password(128, 255) if dnspass is None: dnspass = samba.generate_random_password(128, 255) samdb.transaction_start() try: samdb = fill_samdb(samdb, lp, names, logger=logger, schema=schema, policyguid=policyguid, policyguid_dc=policyguid_dc, fill=samdb_fill, adminpass=adminpass, krbtgtpass=krbtgtpass, invocationid=invocationid, machinepass=machinepass, dns_backend=dns_backend, dnspass=dnspass, ntdsguid=ntdsguid, serverrole=serverrole, dom_for_fun_level=dom_for_fun_level, am_rodc=am_rodc, next_rid=next_rid, dc_rid=dc_rid, backend_store=backend_store) # Set up group policies (domain policy and domain controller # policy) if serverrole == "active directory domain controller": create_default_gpo(paths.sysvol, names.dnsdomain, policyguid, policyguid_dc) except: samdb.transaction_cancel() raise else: samdb.transaction_commit() if serverrole == "active directory domain controller": # Continue setting up sysvol for GPO. This appears to require being # outside a transaction. if not skip_sysvolacl: setsysvolacl(samdb, paths.netlogon, paths.sysvol, paths.root_uid, paths.root_gid, names.domainsid, names.dnsdomain, names.domaindn, lp, use_ntvfs) else: logger.info("Setting acl on sysvol skipped") secretsdb_self_join(secrets_ldb, domain=names.domain, realm=names.realm, dnsdomain=names.dnsdomain, netbiosname=names.netbiosname, domainsid=names.domainsid, machinepass=machinepass, secure_channel_type=SEC_CHAN_BDC) # Now set up the right msDS-SupportedEncryptionTypes into the DB # In future, this might be determined from some configuration kerberos_enctypes = str(ENC_ALL_TYPES) try: msg = ldb.Message(ldb.Dn(samdb, samdb.searchone("distinguishedName", expression="samAccountName=%s$" % names.netbiosname, scope=ldb.SCOPE_SUBTREE).decode('utf8'))) msg["msDS-SupportedEncryptionTypes"] = ldb.MessageElement( elements=kerberos_enctypes, flags=ldb.FLAG_MOD_REPLACE, name="msDS-SupportedEncryptionTypes") samdb.modify(msg) except ldb.LdbError as e: (enum, estr) = e.args if enum != ldb.ERR_NO_SUCH_ATTRIBUTE: # It might be that this attribute does not exist in this schema raise setup_ad_dns(samdb, secrets_ldb, names, paths, lp, logger, hostip=hostip, hostip6=hostip6, dns_backend=dns_backend, dnspass=dnspass, os_level=dom_for_fun_level, targetdir=targetdir, fill_level=samdb_fill, backend_store=backend_store) domainguid = samdb.searchone(basedn=samdb.get_default_basedn(), attribute="objectGUID") assert isinstance(domainguid, str) lastProvisionUSNs = get_last_provision_usn(samdb) maxUSN = get_max_usn(samdb, str(names.rootdn)) if lastProvisionUSNs is not None: update_provision_usn(samdb, 0, maxUSN, invocationid, 1) else: set_provision_usn(samdb, 0, maxUSN, invocationid) logger.info("Setting up sam.ldb rootDSE marking as synchronized") setup_modify_ldif(samdb, setup_path("provision_rootdse_modify.ldif"), { 'NTDSGUID' : names.ntdsguid }) # fix any dangling GUIDs from the provision logger.info("Fixing provision GUIDs") chk = dbcheck(samdb, samdb_schema=samdb, verbose=False, fix=True, yes=True, quiet=True) samdb.transaction_start() try: # a small number of GUIDs are missing because of ordering issues in the # provision code for schema_obj in ['CN=Domain', 'CN=Organizational-Person', 'CN=Contact', 'CN=inetOrgPerson']: chk.check_database(DN="%s,%s" % (schema_obj, names.schemadn), scope=ldb.SCOPE_BASE, attrs=['defaultObjectCategory']) chk.check_database(DN="CN=IP Security,CN=System,%s" % names.domaindn, scope=ldb.SCOPE_ONELEVEL, attrs=['ipsecOwnersReference', 'ipsecFilterReference', 'ipsecISAKMPReference', 'ipsecNegotiationPolicyReference', 'ipsecNFAReference']) if chk.check_database(DN=names.schemadn, scope=ldb.SCOPE_SUBTREE, attrs=['attributeId', 'governsId']) != 0: raise ProvisioningError("Duplicate attributeId or governsId in schema. Must be fixed manually!!") except: samdb.transaction_cancel() raise else: samdb.transaction_commit() _ROLES_MAP = { "ROLE_STANDALONE": "standalone server", "ROLE_DOMAIN_MEMBER": "member server", "ROLE_DOMAIN_BDC": "active directory domain controller", "ROLE_DOMAIN_PDC": "active directory domain controller", "dc": "active directory domain controller", "member": "member server", "domain controller": "active directory domain controller", "active directory domain controller": "active directory domain controller", "member server": "member server", "standalone": "standalone server", "standalone server": "standalone server", } def sanitize_server_role(role): """Sanitize a server role name. :param role: Server role :raise ValueError: If the role can not be interpreted :return: Sanitized server role (one of "member server", "active directory domain controller", "standalone server") """ try: return _ROLES_MAP[role] except KeyError: raise ValueError(role) def provision_fake_ypserver(logger, samdb, domaindn, netbiosname, nisdomain, maxuid, maxgid): """Create AD entries for the fake ypserver. This is needed for being able to manipulate posix attrs via ADUC. """ samdb.transaction_start() try: logger.info("Setting up fake yp server settings") setup_add_ldif(samdb, setup_path("ypServ30.ldif"), { "DOMAINDN": domaindn, "NETBIOSNAME": netbiosname, "NISDOMAIN": nisdomain, }) except: samdb.transaction_cancel() raise else: samdb.transaction_commit() def directory_create_or_exists(path, mode=0o755): if not os.path.exists(path): try: os.mkdir(path, mode) except OSError as e: if e.errno in [errno.EEXIST]: pass else: raise ProvisioningError("Failed to create directory %s: %s" % (path, e.strerror)) def provision(logger, session_info, smbconf=None, targetdir=None, samdb_fill=FILL_FULL, realm=None, rootdn=None, domaindn=None, schemadn=None, configdn=None, serverdn=None, domain=None, hostname=None, hostip=None, hostip6=None, domainsid=None, next_rid=1000, dc_rid=None, adminpass=None, ldapadminpass=None, krbtgtpass=None, domainguid=None, policyguid=None, policyguid_dc=None, dns_backend=None, dns_forwarder=None, dnspass=None, invocationid=None, machinepass=None, ntdsguid=None, root=None, nobody=None, users=None, backup=None, aci=None, serverrole=None, dom_for_fun_level=None, backend_type=None, sitename=None, ol_mmr_urls=None, ol_olc=None, slapd_path=None, useeadb=False, am_rodc=False, lp=None, use_ntvfs=False, use_rfc2307=False, maxuid=None, maxgid=None, skip_sysvolacl=True, ldap_backend_forced_uri=None, nosync=False, ldap_dryrun_mode=False, ldap_backend_extra_port=None, base_schema=None, plaintext_secrets=False, backend_store=None): """Provision samba4 :note: caution, this wipes all existing data! """ try: serverrole = sanitize_server_role(serverrole) except ValueError: raise ProvisioningError('server role (%s) should be one of "active directory domain controller", "member server", "standalone server"' % serverrole) if ldapadminpass is None: # Make a new, random password between Samba and it's LDAP server ldapadminpass = samba.generate_random_password(128, 255) if backend_type is None: backend_type = "ldb" if backend_store is None: backend_store = get_default_backend_store() if domainsid is None: domainsid = security.random_sid() root_uid = findnss_uid([root or "root"]) nobody_uid = findnss_uid([nobody or "nobody"]) users_gid = findnss_gid([users or "users", 'users', 'other', 'staff']) root_gid = pwd.getpwuid(root_uid).pw_gid try: bind_gid = findnss_gid(["bind", "named"]) except KeyError: bind_gid = None if targetdir is not None: smbconf = os.path.join(targetdir, "etc", "smb.conf") elif smbconf is None: smbconf = samba.param.default_path() if not os.path.exists(os.path.dirname(smbconf)): os.makedirs(os.path.dirname(smbconf)) server_services = [] global_param = {} if use_rfc2307: global_param["idmap_ldb:use rfc2307"] = ["yes"] if dns_backend != "SAMBA_INTERNAL": server_services.append("-dns") else: if dns_forwarder is not None: global_param["dns forwarder"] = [dns_forwarder] if use_ntvfs: server_services.append("+smb") server_services.append("-s3fs") global_param["dcerpc endpoint servers"] = ["+winreg", "+srvsvc"] if len(server_services) > 0: global_param["server services"] = server_services # only install a new smb.conf if there isn't one there already if os.path.exists(smbconf): # if Samba Team members can't figure out the weird errors # loading an empty smb.conf gives, then we need to be smarter. # Pretend it just didn't exist --abartlet f = open(smbconf, 'r') try: data = f.read().lstrip() finally: f.close() if data is None or data == "": make_smbconf(smbconf, hostname, domain, realm, targetdir, serverrole=serverrole, eadb=useeadb, use_ntvfs=use_ntvfs, lp=lp, global_param=global_param) else: make_smbconf(smbconf, hostname, domain, realm, targetdir, serverrole=serverrole, eadb=useeadb, use_ntvfs=use_ntvfs, lp=lp, global_param=global_param) if lp is None: lp = samba.param.LoadParm() lp.load(smbconf) names = guess_names(lp=lp, hostname=hostname, domain=domain, dnsdomain=realm, serverrole=serverrole, domaindn=domaindn, configdn=configdn, schemadn=schemadn, serverdn=serverdn, sitename=sitename, rootdn=rootdn, domain_names_forced=(samdb_fill == FILL_DRS)) paths = provision_paths_from_lp(lp, names.dnsdomain) paths.bind_gid = bind_gid paths.root_uid = root_uid; paths.root_gid = root_gid if hostip is None: logger.info("Looking up IPv4 addresses") hostips = interface_ips_v4(lp) if len(hostips) > 0: hostip = hostips[0] if len(hostips) > 1: logger.warning("More than one IPv4 address found. Using %s", hostip) if hostip == "127.0.0.1": hostip = None if hostip is None: logger.warning("No IPv4 address will be assigned") if hostip6 is None: logger.info("Looking up IPv6 addresses") hostips = interface_ips_v6(lp) if hostips: hostip6 = hostips[0] if len(hostips) > 1: logger.warning("More than one IPv6 address found. Using %s", hostip6) if hostip6 is None: logger.warning("No IPv6 address will be assigned") names.hostip = hostip names.hostip6 = hostip6 names.domainguid = domainguid names.domainsid = domainsid names.forestsid = domainsid if serverrole is None: serverrole = lp.get("server role") directory_create_or_exists(paths.private_dir, 0o700) directory_create_or_exists(paths.binddns_dir, 0o770) directory_create_or_exists(os.path.join(paths.private_dir, "tls")) directory_create_or_exists(paths.state_dir) if not plaintext_secrets: setup_encrypted_secrets_key(paths.encrypted_secrets_key_path) if paths.sysvol and not os.path.exists(paths.sysvol): os.makedirs(paths.sysvol, 0o775) ldapi_url = "ldapi://%s" % urllib_quote(paths.s4_ldapi_path, safe="") schema = Schema(domainsid, invocationid=invocationid, schemadn=names.schemadn, base_schema=base_schema) if backend_type == "ldb": provision_backend = LDBBackend(backend_type, paths=paths, lp=lp, names=names, logger=logger) elif backend_type == "existing": # If support for this is ever added back, then the URI will need to be # specified again provision_backend = ExistingBackend(backend_type, paths=paths, lp=lp, names=names, logger=logger, ldap_backend_forced_uri=ldap_backend_forced_uri) elif backend_type == "fedora-ds": provision_backend = FDSBackend(backend_type, paths=paths, lp=lp, names=names, logger=logger, domainsid=domainsid, schema=schema, hostname=hostname, ldapadminpass=ldapadminpass, slapd_path=slapd_path, root=root) elif backend_type == "openldap": provision_backend = OpenLDAPBackend(backend_type, paths=paths, lp=lp, names=names, logger=logger, domainsid=domainsid, schema=schema, hostname=hostname, ldapadminpass=ldapadminpass, slapd_path=slapd_path, ol_mmr_urls=ol_mmr_urls, ldap_backend_extra_port=ldap_backend_extra_port, ldap_dryrun_mode=ldap_dryrun_mode, nosync=nosync, ldap_backend_forced_uri=ldap_backend_forced_uri) else: raise ValueError("Unknown LDAP backend type selected") provision_backend.init() provision_backend.start() # only install a new shares config db if there is none if not os.path.exists(paths.shareconf): logger.info("Setting up share.ldb") share_ldb = Ldb(paths.shareconf, session_info=session_info, lp=lp) share_ldb.load_ldif_file_add(setup_path("share.ldif")) logger.info("Setting up secrets.ldb") secrets_ldb = setup_secretsdb(paths, session_info=session_info, backend_credentials=provision_backend.credentials, lp=lp) try: logger.info("Setting up the registry") setup_registry(paths.hklm, session_info, lp=lp) logger.info("Setting up the privileges database") setup_privileges(paths.privilege, session_info, lp=lp) logger.info("Setting up idmap db") idmap = setup_idmapdb(paths.idmapdb, session_info=session_info, lp=lp) setup_name_mappings(idmap, sid=str(domainsid), root_uid=root_uid, nobody_uid=nobody_uid, users_gid=users_gid, root_gid=root_gid) logger.info("Setting up SAM db") samdb = setup_samdb(paths.samdb, session_info, provision_backend, lp, names, logger=logger, serverrole=serverrole, schema=schema, fill=samdb_fill, am_rodc=am_rodc, plaintext_secrets=plaintext_secrets, backend_store=backend_store) if serverrole == "active directory domain controller": if paths.netlogon is None: raise MissingShareError("netlogon", paths.smbconf) if paths.sysvol is None: raise MissingShareError("sysvol", paths.smbconf) if not os.path.isdir(paths.netlogon): os.makedirs(paths.netlogon, 0o755) if adminpass is None: adminpass = samba.generate_random_password(12, 32) adminpass_generated = True else: adminpass = unicode(adminpass, 'utf-8') adminpass_generated = False if samdb_fill == FILL_FULL: provision_fill(samdb, secrets_ldb, logger, names, paths, schema=schema, targetdir=targetdir, samdb_fill=samdb_fill, hostip=hostip, hostip6=hostip6, next_rid=next_rid, dc_rid=dc_rid, adminpass=adminpass, krbtgtpass=krbtgtpass, policyguid=policyguid, policyguid_dc=policyguid_dc, invocationid=invocationid, machinepass=machinepass, ntdsguid=ntdsguid, dns_backend=dns_backend, dnspass=dnspass, serverrole=serverrole, dom_for_fun_level=dom_for_fun_level, am_rodc=am_rodc, lp=lp, use_ntvfs=use_ntvfs, skip_sysvolacl=skip_sysvolacl, backend_store=backend_store) if not is_heimdal_built(): create_kdc_conf(paths.kdcconf, realm, domain, os.path.dirname(lp.get("log file"))) logger.info("The Kerberos KDC configuration for Samba AD is " "located at %s", paths.kdcconf) create_krb5_conf(paths.krb5conf, dnsdomain=names.dnsdomain, hostname=names.hostname, realm=names.realm) logger.info("A Kerberos configuration suitable for Samba AD has been " "generated at %s", paths.krb5conf) logger.info("Merge the contents of this file with your system " "krb5.conf or replace it with this one. Do not create a " "symlink!") if serverrole == "active directory domain controller": create_dns_update_list(lp, logger, paths) backend_result = provision_backend.post_setup() provision_backend.shutdown() except: secrets_ldb.transaction_cancel() raise # Now commit the secrets.ldb to disk secrets_ldb.transaction_commit() # the commit creates the dns.keytab in the private directory private_dns_keytab_path = os.path.join(paths.private_dir, paths.dns_keytab) bind_dns_keytab_path = os.path.join(paths.binddns_dir, paths.dns_keytab) if os.path.isfile(private_dns_keytab_path): if os.path.isfile(bind_dns_keytab_path): try: os.unlink(bind_dns_keytab_path) except OSError as e: logger.error("Failed to remove %s: %s" % (bind_dns_keytab_path, e.strerror)) # link the dns.keytab to the bind-dns directory try: os.link(private_dns_keytab_path, bind_dns_keytab_path) except OSError as e: logger.error("Failed to create link %s -> %s: %s" % (private_dns_keytab_path, bind_dns_keytab_path, e.strerror)) # chown the dns.keytab in the bind-dns directory if paths.bind_gid is not None: try: os.chmod(paths.binddns_dir, 0o770) os.chown(paths.binddns_dir, -1, paths.bind_gid) except OSError: if not os.environ.has_key('SAMBA_SELFTEST'): logger.info("Failed to chown %s to bind gid %u", paths.binddns_dir, paths.bind_gid) try: os.chmod(bind_dns_keytab_path, 0o640) os.chown(bind_dns_keytab_path, -1, paths.bind_gid) except OSError: if not os.environ.has_key('SAMBA_SELFTEST'): logger.info("Failed to chown %s to bind gid %u", bind_dns_keytab_path, paths.bind_gid) result = ProvisionResult() result.server_role = serverrole result.domaindn = domaindn result.paths = paths result.names = names result.lp = lp result.samdb = samdb result.idmap = idmap result.domainsid = str(domainsid) if samdb_fill == FILL_FULL: result.adminpass_generated = adminpass_generated result.adminpass = adminpass else: result.adminpass_generated = False result.adminpass = None result.backend_result = backend_result if use_rfc2307: provision_fake_ypserver(logger=logger, samdb=samdb, domaindn=names.domaindn, netbiosname=names.netbiosname, nisdomain=names.domain.lower(), maxuid=maxuid, maxgid=maxgid) return result def provision_become_dc(smbconf=None, targetdir=None, realm=None, rootdn=None, domaindn=None, schemadn=None, configdn=None, serverdn=None, domain=None, hostname=None, domainsid=None, adminpass=None, krbtgtpass=None, domainguid=None, policyguid=None, policyguid_dc=None, invocationid=None, machinepass=None, dnspass=None, dns_backend=None, root=None, nobody=None, users=None, backup=None, serverrole=None, ldap_backend=None, ldap_backend_type=None, sitename=None, debuglevel=1, use_ntvfs=False): logger = logging.getLogger("provision") samba.set_debug_level(debuglevel) res = provision(logger, system_session(), smbconf=smbconf, targetdir=targetdir, samdb_fill=FILL_DRS, realm=realm, rootdn=rootdn, domaindn=domaindn, schemadn=schemadn, configdn=configdn, serverdn=serverdn, domain=domain, hostname=hostname, hostip=None, domainsid=domainsid, machinepass=machinepass, serverrole="active directory domain controller", sitename=sitename, dns_backend=dns_backend, dnspass=dnspass, use_ntvfs=use_ntvfs) res.lp.set("debuglevel", str(debuglevel)) return res def create_krb5_conf(path, dnsdomain, hostname, realm): """Write out a file containing a valid krb5.conf file :param path: Path of the new krb5.conf file. :param dnsdomain: DNS Domain name :param hostname: Local hostname :param realm: Realm name """ setup_file(setup_path("krb5.conf"), path, { "DNSDOMAIN": dnsdomain, "HOSTNAME": hostname, "REALM": realm, }) class ProvisioningError(Exception): """A generic provision error.""" def __init__(self, value): self.value = value def __str__(self): return "ProvisioningError: " + self.value class InvalidNetbiosName(Exception): """A specified name was not a valid NetBIOS name.""" def __init__(self, name): super(InvalidNetbiosName, self).__init__( "The name '%r' is not a valid NetBIOS name" % name) class MissingShareError(ProvisioningError): def __init__(self, name, smbconf): super(MissingShareError, self).__init__( "Existing smb.conf does not have a [%s] share, but you are " "configuring a DC. Please remove %s or add the share manually." % (name, smbconf))