s4/scripting/bin: PY3 fix samba4.blackbox.upgradeprovision.alpha13
[nivanova/samba-autobuild/.git] / python / samba / provision / __init__.py
index 26d11a59ded04f4c4cf85ceb1d1edbfba31da172..9c7a30404ee08be492e8284a6e54f0b78fbd4883 100644 (file)
@@ -27,6 +27,8 @@
 __docformat__ = "restructuredText"
 
 from samba.compat import urllib_quote
+from samba.compat import string_types
+from samba.compat import binary_type
 from base64 import b64encode
 import errno
 import os
@@ -60,17 +62,17 @@ from samba import (
     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
@@ -80,7 +82,7 @@ from samba.provision.backend import (
     FDSBackend,
     LDBBackend,
     OpenLDAPBackend,
-    )
+)
 from samba.descriptor import (
     get_empty_descriptor,
     get_config_descriptor,
@@ -102,7 +104,7 @@ from samba.descriptor import (
     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,
@@ -116,7 +118,7 @@ from samba.provision.sambadns import (
     get_dnsadmins_sid,
     setup_ad_dns,
     create_dns_update_list
-    )
+)
 
 import samba.param
 import samba.registry
@@ -181,7 +183,7 @@ class ProvisionNames(object):
 
 
 def find_provision_key_parameters(samdb, secretsdb, idmapdb, paths, smbconf,
-        lp):
+                                  lp):
     """Get key provision parameters (realm, domain, ...) from a given provision
 
     :param samdb: An LDB object connected to the sam.ldb file
@@ -204,32 +206,32 @@ def find_provision_key_parameters(samdb, secretsdb, idmapdb, paths, smbconf,
     # 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("$","")
+                           names.domain, base="CN=Primary Domains",
+                           scope=ldb.SCOPE_SUBTREE, attrs=["sAMAccountName"])
+    names.netbiosname = str(res[0]["sAMAccountName"]).replace("$", "")
 
     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"])
+                           base="", scope=ldb.SCOPE_BASE,
+                           attrs=["defaultNamingContext", "schemaNamingContext",
+                                  "configurationNamingContext", "rootDomainNamingContext",
+                                  "namingContexts"])
 
-    names.configdn = current[0]["configurationNamingContext"][0]
-    names.schemadn = current[0]["schemaNamingContext"][0]
+    names.configdn = str(current[0]["configurationNamingContext"][0])
+    names.schemadn = str(current[0]["schemaNamingContext"][0])
     if not (ldb.Dn(samdb, basedn) == (ldb.Dn(samdb,
-                                       current[0]["defaultNamingContext"][0].decode('utf8')))):
+                                             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)))
+                                                          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.domaindn = str(current[0]["defaultNamingContext"][0])
+    names.rootdn = str(current[0]["rootDomainNamingContext"][0])
+    names.ncs = current[0]["namingContexts"]
     names.dnsforestdn = None
     names.dnsdomaindn = None
 
@@ -248,7 +250,7 @@ def find_provision_key_parameters(samdb, secretsdb, idmapdb, paths, smbconf,
 
     # default site name
     res3 = samdb.search(expression="(objectClass=site)",
-        base="CN=Sites," + names.configdn, scope=ldb.SCOPE_ONELEVEL, attrs=["cn"])
+                        base="CN=Sites," + str(names.configdn), scope=ldb.SCOPE_ONELEVEL, attrs=["cn"])
     names.sitename = str(res3[0]["cn"])
 
     # dns hostname and server dn
@@ -261,26 +263,26 @@ def find_provision_key_parameters(samdb, secretsdb, idmapdb, paths, smbconf,
     names.hostname = str(res4[0]["dNSHostName"]).replace("." + names.dnsdomain, "")
 
     server_res = samdb.search(expression="serverReference=%s" % res4[0].dn,
-                                attrs=[], base=names.configdn)
+                              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"])
+                        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" ])
+                        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])
+    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:
+            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])
@@ -288,15 +290,15 @@ def find_provision_key_parameters(samdb, secretsdb, idmapdb, paths, smbconf,
     # 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("}","")
+                        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"])
+                        attrs=["cn", "displayName"])
     if len(res8) == 1:
-        names.policyid_dc = str(res8[0]["cn"]).replace("{","").replace("}","")
+        names.policyid_dc = str(res8[0]["cn"]).replace("{", "").replace("}", "")
     else:
         names.policyid_dc = None
 
@@ -364,15 +366,17 @@ def update_provision_usn(samdb, low, high, id, replace=False):
                              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)
+            if not re.search(';', str(e)):
+                e = "%s;%s" % (str(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)
+    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"])
@@ -398,12 +402,14 @@ def set_provision_usn(samdb, 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)
+    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):
+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
@@ -411,11 +417,11 @@ def get_max_usn(samdb,basedn):
                     (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"])
+    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"]
 
 
@@ -428,8 +434,8 @@ def get_last_provision_usn(sam):
     """
     try:
         entry = sam.search(expression="%s=*" % LAST_PROVISION_USN_ATTRIBUTE,
-                       base="@PROVISION", scope=ldb.SCOPE_BASE,
-                       attrs=[LAST_PROVISION_USN_ATTRIBUTE, "provisionnerID"])
+                           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:
@@ -508,7 +514,7 @@ def check_install(lp, session_info, credentials):
     if lp.get("realm") == "":
         raise Exception("Realm empty")
     samdb = Ldb(lp.samdb_url(), session_info=session_info,
-            credentials=credentials, lp=lp)
+                credentials=credentials, lp=lp)
     if len(samdb.search("(cn=Administrator)")) != 1:
         raise ProvisioningError("No administrator account found")
 
@@ -678,7 +684,7 @@ def guess_names(lp=None, hostname=None, domain=None, dnsdomain=None,
         dnsdomain = netbiosname.lower()
 
     if rootdn is None:
-       rootdn = domaindn
+        rootdn = domaindn
 
     if configdn is None:
         configdn = "CN=Configuration," + rootdn
@@ -705,6 +711,7 @@ def guess_names(lp=None, hostname=None, domain=None, dnsdomain=None,
 
     return names
 
+
 def make_smbconf(smbconf, hostname, domain, realm, targetdir,
                  serverrole=None, eadb=False, use_ntvfs=False, lp=None,
                  global_param=None):
@@ -731,11 +738,11 @@ def make_smbconf(smbconf, hostname, domain, realm, targetdir,
         "workgroup": domain,
         "realm": realm,
         "server role": serverrole,
-        }
+    }
 
     if lp is None:
         lp = samba.param.LoadParm()
-    #Load non-existent file
+    # Load non-existent file
     if os.path.exists(smbconf):
         lp.load(smbconf)
 
@@ -752,7 +759,7 @@ def make_smbconf(smbconf, hostname, domain, realm, targetdir,
         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("state directory", global_settings["state directory"])
         lp.set("cache directory", global_settings["cache directory"])
         lp.set("binddns dir", global_settings["binddns dir"])
 
@@ -774,7 +781,7 @@ def make_smbconf(smbconf, hostname, domain, realm, targetdir,
     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")
+                                          "scripts")
     else:
         global_settings["passdb backend"] = "samba_dsdb"
 
@@ -878,7 +885,6 @@ def setup_samdb_partitions(samdb_path, logger, lp, session_info,
                 "BACKEND_STORE": backend_store_line
         })
 
-
         setup_add_ldif(samdb, setup_path("provision_init.ldif"), {
                 "BACKEND_TYPE": provision_backend.type,
                 "SERVER_ROLE": serverrole,
@@ -906,11 +912,11 @@ def secretsdb_self_join(secretsdb, domain,
     :param machinepass: Machine password
     """
     attrs = ["whenChanged",
-           "secret",
-           "priorSecret",
-           "priorChanged",
-           "krb5Keytab",
-           "privateKeytab"]
+             "secret",
+             "priorSecret",
+             "priorChanged",
+             "krb5Keytab",
+             "privateKeytab"]
 
     if realm is not None:
         if dnsdomain is None:
@@ -943,8 +949,8 @@ def secretsdb_self_join(secretsdb, domain,
     # 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)
+                           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)
@@ -974,11 +980,11 @@ def secretsdb_self_join(secretsdb, domain,
         secretsdb.modify(msg)
         secretsdb.rename(res[0].dn, msg.dn)
     else:
-        spn = [ 'HOST/%s' % shortname ]
+        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 ])
+            spn.extend(['HOST/%s' % dnsname])
         msg["servicePrincipalName"] = spn
 
         secretsdb.add(msg)
@@ -1025,17 +1031,17 @@ def setup_secretsdb(paths, session_info, backend_credentials, lp):
             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')
-                        })
+                               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')
-                        })
+                               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
@@ -1057,6 +1063,7 @@ def setup_privileges(path, session_info, 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.
 
@@ -1077,7 +1084,7 @@ def setup_encrypted_secrets_key(path):
     finally:
         os.umask(umask_original)
 
-    with os.fdopen(fd, 'w') as f:
+    with os.fdopen(fd, 'wb') as f:
         key = samba.generate_random_bytes(16)
         f.write(key)
 
@@ -1123,20 +1130,20 @@ def setup_samdb_rootdse(samdb, names):
     setup_add_ldif(samdb, setup_path("provision_rootdse_add.ldif"), {
         "SCHEMADN": names.schemadn,
         "DOMAINDN": names.domaindn,
-        "ROOTDN"  : names.rootdn,
+        "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):
+                    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
+        ntdsguid_line = "objectGUID: %s\n" % ntdsguid
     else:
         ntdsguid_line = ""
 
@@ -1188,13 +1195,13 @@ def setup_self_join(samdb, admin_session_info, names, fill, machinepass,
 
     # 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,
-                })
+                          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)
@@ -1216,8 +1223,8 @@ def setup_self_join(samdb, admin_session_info, names, fill, machinepass,
               "DNSDOMAIN": names.dnsdomain,
               "DOMAINDN": names.domaindn,
               "DNSPASS_B64": b64encode(dnspass.encode('utf-16-le')).decode('utf8'),
-              "HOSTNAME" : names.hostname,
-              "DNSNAME" : '%s.%s' % (
+              "HOSTNAME": names.hostname,
+              "DNSNAME": '%s.%s' % (
                   names.netbiosname.lower(), names.dnsdomain.lower())
               })
 
@@ -1260,16 +1267,16 @@ def create_default_gpo(sysvolpath, dnsdomain, policyguid, policyguid_dc):
     :param policyguid: GUID of the default domain policy
     :param policyguid_dc: GUID of the default domain controler policy
     """
-    policy_path = getpolicypath(sysvolpath,dnsdomain,policyguid)
+    policy_path = getpolicypath(sysvolpath, dnsdomain, policyguid)
     create_gpo_struct(policy_path)
 
-    policy_path = getpolicypath(sysvolpath,dnsdomain,policyguid_dc)
+    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):
+                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!
@@ -1277,9 +1284,9 @@ def setup_samdb(path, session_info, provision_backend, lp, names,
 
     # 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)
+                           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
@@ -1316,10 +1323,10 @@ def setup_samdb(path, session_info, provision_backend, lp, names,
 
 
 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):
+               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
@@ -1359,7 +1366,7 @@ def fill_samdb(samdb, lp, names, logger, policyguid,
     samdb.set_opaque_integer("domainFunctionality", domainFunctionality)
     samdb.set_opaque_integer("forestFunctionality", forestFunctionality)
     samdb.set_opaque_integer("domainControllerFunctionality",
-        domainControllerFunctionality)
+                             domainControllerFunctionality)
 
     samdb.set_domain_sid(str(names.domainsid))
     samdb.set_invocation_id(invocationid)
@@ -1392,7 +1399,7 @@ def fill_samdb(samdb, lp, names, logger, 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:
@@ -1418,8 +1425,8 @@ def fill_samdb(samdb, lp, names, logger, policyguid,
 
     # 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")
+    msg["subRefs"] = ldb.MessageElement(names.configdn, ldb.FLAG_MOD_ADD,
+                                        "subRefs")
 
     samdb.invocation_id = invocationid
 
@@ -1463,7 +1470,7 @@ def fill_samdb(samdb, lp, names, logger, policyguid,
 
         setup_add_ldif(samdb, setup_path("extended-rights.ldif"), {
                 "CONFIGDN": names.configdn,
-                "INC2012" : incl_2012,
+                "INC2012": incl_2012,
                 })
 
         logger.info("Setting up display specifiers")
@@ -1476,10 +1483,10 @@ def fill_samdb(samdb, lp, names, logger, policyguid,
 
         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
-            })
+                          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')
@@ -1498,8 +1505,8 @@ def fill_samdb(samdb, lp, names, logger, policyguid,
             })
     logger.info("Modifying computers container")
     setup_modify_ldif(samdb,
-        setup_path("provision_computers_modify.ldif"), {
-            "DOMAINDN": names.domaindn})
+                      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')
@@ -1520,22 +1527,22 @@ def fill_samdb(samdb, lp, names, logger, policyguid,
         "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})
+                              "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"])
+        }, controls=["relax:0", "provision:0"])
 
     if fill == FILL_FULL or fill == FILL_SUBDOMAIN:
         setup_modify_ldif(samdb,
@@ -1550,43 +1557,44 @@ def fill_samdb(samdb, lp, names, logger, policyguid,
             "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"])
+        }, 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)
+                        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)
+                                         attribute="objectGUID", expression="", scope=ldb.SCOPE_BASE).decode('utf8')
+        assert isinstance(names.ntdsguid, string_types)
 
     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"
+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)
+                     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)
+                     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):
@@ -1604,15 +1612,15 @@ def set_gpos_acl(sysvol, dnsdomain, domainsid, domaindn, samdb, lp, use_ntvfs, p
     # 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)
+             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)
+    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["nTSecurityDescriptor"][0]).as_sddl()
         policy_path = getpolicypath(sysvol, dnsdomain, str(policy["cn"]))
         set_dir_acl(policy_path, dsacl2fsacl(acl, domainsid), lp,
                     str(domainsid), use_ntvfs,
@@ -1620,7 +1628,7 @@ def set_gpos_acl(sysvol, dnsdomain, domainsid, domaindn, samdb, lp, use_ntvfs, p
 
 
 def setsysvolacl(samdb, netlogon, sysvol, uid, gid, domainsid, dnsdomain,
-        domaindn, lp, use_ntvfs):
+                 domaindn, lp, use_ntvfs):
     """Set the ACL for the sysvol share and the subfolders
 
     :param samdb: An LDB object on the SAM db
@@ -1683,7 +1691,6 @@ def setsysvolacl(samdb, netlogon, sysvol, uid, gid, domainsid, dnsdomain,
         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)
@@ -1725,12 +1732,14 @@ def setsysvolacl(samdb, netlogon, sysvol, uid, gid, domainsid, dnsdomain,
     # 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)
@@ -1758,7 +1767,7 @@ def check_dir_acl(path, acl, lp, domainsid, direct_db_access):
 
 
 def check_gpos_acl(sysvol, dnsdomain, domainsid, domaindn, samdb, lp,
-        direct_db_access):
+                   direct_db_access):
     """Set ACL on the sysvol/<dnsname>/Policies folder and the policy
     folders beneath.
 
@@ -1779,20 +1788,20 @@ def check_gpos_acl(sysvol, dnsdomain, domainsid, domaindn, samdb, lp,
     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)
+    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["nTSecurityDescriptor"][0]).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):
+                   lp):
     """Set the ACL for the sysvol share and the subfolders
 
     :param samdb: An LDB object on the SAM db
@@ -1837,7 +1846,7 @@ def checksysvolacl(samdb, netlogon, sysvol, domainsid, dnsdomain, domaindn,
 
         # Check acls on Policy folder and policies folders
         check_gpos_acl(sysvol, dnsdomain, domainsid, domaindn, samdb, lp,
-                direct_db_access)
+                       direct_db_access)
 
 
 def interface_ips_v4(lp):
@@ -1895,15 +1904,15 @@ def provision_fill(samdb, secrets_ldb, logger, names, paths,
     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)
+                           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)
@@ -1927,9 +1936,9 @@ def provision_fill(samdb, secrets_ldb, logger, names, paths,
             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)
+                            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
@@ -1957,8 +1966,8 @@ def provision_fill(samdb, secrets_ldb, logger, names, paths,
                      backend_store=backend_store)
 
         domainguid = samdb.searchone(basedn=samdb.get_default_basedn(),
-                                     attribute="objectGUID")
-        assert isinstance(domainguid, str)
+                                     attribute="objectGUID").decode('utf8')
+        assert isinstance(domainguid, string_types)
 
     lastProvisionUSNs = get_last_provision_usn(samdb)
     maxUSN = get_max_usn(samdb, str(names.rootdn))
@@ -1969,12 +1978,12 @@ def provision_fill(samdb, secrets_ldb, logger, names, paths,
 
     logger.info("Setting up sam.ldb rootDSE marking as synchronized")
     setup_modify_ldif(samdb, setup_path("provision_rootdse_modify.ldif"),
-                      { 'NTDSGUID' : names.ntdsguid })
+                      {'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)
+                  quiet=True)
     samdb.transaction_start()
     try:
         # a small number of GUIDs are missing because of ordering issues in the
@@ -1991,7 +2000,7 @@ def provision_fill(samdb, secrets_ldb, logger, names, paths,
                                   'ipsecNegotiationPolicyReference',
                                   'ipsecNFAReference'])
         if chk.check_database(DN=names.schemadn, scope=ldb.SCOPE_SUBTREE,
-                attrs=['attributeId', 'governsId']) != 0:
+                              attrs=['attributeId', 'governsId']) != 0:
             raise ProvisioningError("Duplicate attributeId or governsId in schema. Must be fixed manually!!")
     except:
         samdb.transaction_cancel()
@@ -2012,7 +2021,7 @@ _ROLES_MAP = {
     "member server": "member server",
     "standalone": "standalone server",
     "standalone server": "standalone server",
-    }
+}
 
 
 def sanitize_server_role(role):
@@ -2030,7 +2039,7 @@ def sanitize_server_role(role):
 
 
 def provision_fake_ypserver(logger, samdb, domaindn, netbiosname, nisdomain,
-        maxuid, maxgid):
+                            maxuid, maxgid):
     """Create AD entries for the fake ypserver.
 
     This is needed for being able to manipulate posix attrs via ADUC.
@@ -2039,16 +2048,17 @@ def provision_fake_ypserver(logger, samdb, domaindn, netbiosname, nisdomain,
     try:
         logger.info("Setting up fake yp server settings")
         setup_add_ldif(samdb, setup_path("ypServ30.ldif"), {
-        "DOMAINDN": domaindn,
-        "NETBIOSNAME": netbiosname,
-        "NISDOMAIN": nisdomain,
-         })
+            "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:
@@ -2059,6 +2069,7 @@ def directory_create_or_exists(path, mode=0o755):
             else:
                 raise ProvisioningError("Failed to create directory %s: %s" % (path, e.strerror))
 
+
 def determine_host_ip(logger, lp, hostip=None):
     if hostip is None:
         logger.info("Looking up IPv4 addresses")
@@ -2067,7 +2078,7 @@ def determine_host_ip(logger, lp, hostip=None):
             hostip = hostips[0]
             if len(hostips) > 1:
                 logger.warning("More than one IPv4 address found. Using %s",
-                    hostip)
+                               hostip)
     if hostip == "127.0.0.1":
         hostip = None
     if hostip is None:
@@ -2075,6 +2086,7 @@ def determine_host_ip(logger, lp, hostip=None):
 
     return hostip
 
+
 def determine_host_ip6(logger, lp, hostip6=None):
     if hostip6 is None:
         logger.info("Looking up IPv6 addresses")
@@ -2088,22 +2100,23 @@ def determine_host_ip6(logger, lp, hostip6=None):
 
     return hostip6
 
+
 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):
+              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!
@@ -2186,13 +2199,13 @@ def provision(logger, session_info, smbconf=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))
+                        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_uid = root_uid
     paths.root_gid = root_gid
 
     hostip = determine_host_ip(logger, lp, hostip)
@@ -2219,35 +2232,35 @@ def provision(logger, session_info, smbconf=None,
     ldapi_url = "ldapi://%s" % urllib_quote(paths.s4_ldapi_path, safe="")
 
     schema = Schema(domainsid, invocationid=invocationid,
-        schemadn=names.schemadn, base_schema=base_schema)
+                    schemadn=names.schemadn, base_schema=base_schema)
 
     if backend_type == "ldb":
         provision_backend = LDBBackend(backend_type, paths=paths,
-            lp=lp,
-            names=names, logger=logger)
+                                       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)
+                                            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)
+                                       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)
+                                            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")
 
@@ -2262,8 +2275,8 @@ def provision(logger, session_info, smbconf=None,
 
     logger.info("Setting up secrets.ldb")
     secrets_ldb = setup_secretsdb(paths,
-        session_info=session_info,
-        backend_credentials=provision_backend.credentials, lp=lp)
+                                  session_info=session_info,
+                                  backend_credentials=provision_backend.credentials, lp=lp)
 
     try:
         logger.info("Setting up the registry")
@@ -2301,23 +2314,24 @@ def provision(logger, session_info, smbconf=None,
             adminpass = samba.generate_random_password(12, 32)
             adminpass_generated = True
         else:
-            adminpass = unicode(adminpass, 'utf-8')
+            if isinstance(adminpass, binary_type):
+                adminpass = adminpass.decode('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)
+                           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")))
@@ -2404,33 +2418,33 @@ def provision(logger, session_info, smbconf=None,
 
     if use_rfc2307:
         provision_fake_ypserver(logger=logger, samdb=samdb,
-                domaindn=names.domaindn, netbiosname=names.netbiosname,
-                nisdomain=names.domain.lower(), maxuid=maxuid, maxgid=maxgid)
+                                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):
+                        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)
+                    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
 
@@ -2447,7 +2461,7 @@ def create_krb5_conf(path, dnsdomain, hostname, realm):
             "DNSDOMAIN": dnsdomain,
             "HOSTNAME": hostname,
             "REALM": realm,
-        })
+    })
 
 
 class ProvisioningError(Exception):