# backend code for upgrading from Samba3
# Copyright Jelmer Vernooij 2005-2007
# Copyright Andrew Bartlett 2011
#
# 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 .
#
"""Support code for upgrading from Samba 3 to Samba 4."""
__docformat__ = "restructuredText"
import ldb
import time
import pwd
from samba import Ldb, registry
from samba.provision import provision, ProvisioningError, setsysvolacl
from samba.provision.common import FILL_FULL
from samba.samba3 import passdb
from samba.samba3 import param as s3param
from samba.dcerpc import lsa, samr, security
from samba.dcerpc.security import dom_sid
from samba.credentials import Credentials
from samba import dsdb
from samba.ndr import ndr_pack
from samba import unix2nttime
from samba import generate_random_password
def import_sam_policy(samdb, policy, logger):
"""Import a Samba 3 policy.
:param samdb: Samba4 SAM database
:param policy: Samba3 account policy
:param logger: Logger object
"""
# Following entries are used -
# min password length, password history, minimum password age,
# maximum password age, lockout duration
#
# Following entries are not used -
# reset count minutes, user must logon to change password,
# bad lockout minutes, disconnect time
m = ldb.Message()
m.dn = samdb.get_default_basedn()
if 'min password length' in policy:
m['a01'] = ldb.MessageElement(str(policy['min password length']),
ldb.FLAG_MOD_REPLACE, 'minPwdLength')
if 'password history' in policy:
m['a02'] = ldb.MessageElement(str(policy['password history']),
ldb.FLAG_MOD_REPLACE, 'pwdHistoryLength')
if 'minimum password age' in policy:
min_pw_age_unix = policy['minimum password age']
min_pw_age_nt = int(-min_pw_age_unix * (1e7))
m['a03'] = ldb.MessageElement(str(min_pw_age_nt), ldb.FLAG_MOD_REPLACE,
'minPwdAge')
if 'maximum password age' in policy:
max_pw_age_unix = policy['maximum password age']
if max_pw_age_unix == -1 or max_pw_age_unix == 0 or max_pw_age_unix == 0xFFFFFFFF:
max_pw_age_nt = -0x8000000000000000
else:
max_pw_age_nt = int(-max_pw_age_unix * (1e7))
m['a04'] = ldb.MessageElement(str(max_pw_age_nt), ldb.FLAG_MOD_REPLACE,
'maxPwdAge')
if 'lockout duration' in policy:
lockout_duration_mins = policy['lockout duration']
lockout_duration_nt = unix2nttime(lockout_duration_mins * 60)
m['a05'] = ldb.MessageElement(str(lockout_duration_nt),
ldb.FLAG_MOD_REPLACE, 'lockoutDuration')
try:
samdb.modify(m)
except ldb.LdbError as e:
logger.warn("Could not set account policy, (%s)", str(e))
def add_posix_attrs(logger, samdb, sid, name, nisdomain, xid_type, home=None,
shell=None, pgid=None):
"""Add posix attributes for the user/group
:param samdb: Samba4 sam.ldb database
:param sid: user/group sid
:param sid: user/group name
:param nisdomain: name of the (fake) NIS domain
:param xid_type: type of id (ID_TYPE_UID/ID_TYPE_GID)
:param home: user homedir (Unix homepath)
:param shell: user shell
:param pgid: users primary group id
"""
try:
m = ldb.Message()
m.dn = ldb.Dn(samdb, "" % str(sid))
if xid_type == "ID_TYPE_UID":
m['unixHomeDirectory'] = ldb.MessageElement(
str(home), ldb.FLAG_MOD_REPLACE, 'unixHomeDirectory')
m['loginShell'] = ldb.MessageElement(
str(shell), ldb.FLAG_MOD_REPLACE, 'loginShell')
m['gidNumber'] = ldb.MessageElement(
str(pgid), ldb.FLAG_MOD_REPLACE, 'gidNumber')
m['msSFU30NisDomain'] = ldb.MessageElement(
str(nisdomain), ldb.FLAG_MOD_REPLACE, 'msSFU30NisDomain')
samdb.modify(m)
except ldb.LdbError as e:
logger.warn(
'Could not add posix attrs for AD entry for sid=%s, (%s)',
str(sid), str(e))
def add_ad_posix_idmap_entry(samdb, sid, xid, xid_type, logger):
"""Create idmap entry
:param samdb: Samba4 sam.ldb database
:param sid: user/group sid
:param xid: user/group id
:param xid_type: type of id (ID_TYPE_UID/ID_TYPE_GID)
:param logger: Logger object
"""
try:
m = ldb.Message()
m.dn = ldb.Dn(samdb, "" % str(sid))
if xid_type == "ID_TYPE_UID":
m['uidNumber'] = ldb.MessageElement(
str(xid), ldb.FLAG_MOD_REPLACE, 'uidNumber')
m['objectClass'] = ldb.MessageElement(
"posixAccount", ldb.FLAG_MOD_ADD, 'objectClass')
elif xid_type == "ID_TYPE_GID":
m['gidNumber'] = ldb.MessageElement(
str(xid), ldb.FLAG_MOD_REPLACE, 'gidNumber')
m['objectClass'] = ldb.MessageElement(
"posixGroup", ldb.FLAG_MOD_ADD, 'objectClass')
samdb.modify(m)
except ldb.LdbError as e:
logger.warn(
'Could not modify AD idmap entry for sid=%s, id=%s, type=%s (%s)',
str(sid), str(xid), xid_type, str(e))
def add_idmap_entry(idmapdb, sid, xid, xid_type, logger):
"""Create idmap entry
:param idmapdb: Samba4 IDMAP database
:param sid: user/group sid
:param xid: user/group id
:param xid_type: type of id (ID_TYPE_UID/ID_TYPE_GID)
:param logger: Logger object
"""
# First try to see if we already have this entry
found = False
msg = idmapdb.search(expression='objectSid=%s' % str(sid))
if msg.count == 1:
found = True
if found:
try:
m = ldb.Message()
m.dn = msg[0]['dn']
m['xidNumber'] = ldb.MessageElement(
str(xid), ldb.FLAG_MOD_REPLACE, 'xidNumber')
m['type'] = ldb.MessageElement(
xid_type, ldb.FLAG_MOD_REPLACE, 'type')
idmapdb.modify(m)
except ldb.LdbError as e:
logger.warn(
'Could not modify idmap entry for sid=%s, id=%s, type=%s (%s)',
str(sid), str(xid), xid_type, str(e))
else:
try:
idmapdb.add({"dn": "CN=%s" % str(sid),
"cn": str(sid),
"objectClass": "sidMap",
"objectSid": ndr_pack(sid),
"type": xid_type,
"xidNumber": str(xid)})
except ldb.LdbError as e:
logger.warn(
'Could not add idmap entry for sid=%s, id=%s, type=%s (%s)',
str(sid), str(xid), xid_type, str(e))
def import_idmap(idmapdb, samba3, logger):
"""Import idmap data.
:param idmapdb: Samba4 IDMAP database
:param samba3_idmap: Samba3 IDMAP database to import from
:param logger: Logger object
"""
try:
samba3_idmap = samba3.get_idmap_db()
except IOError as e:
logger.warn('Cannot open idmap database, Ignoring: %s', str(e))
return
currentxid = max(samba3_idmap.get_user_hwm(), samba3_idmap.get_group_hwm())
lowerbound = currentxid
# FIXME: upperbound
m = ldb.Message()
m.dn = ldb.Dn(idmapdb, 'CN=CONFIG')
m['lowerbound'] = ldb.MessageElement(
str(lowerbound), ldb.FLAG_MOD_REPLACE, 'lowerBound')
m['xidNumber'] = ldb.MessageElement(
str(currentxid), ldb.FLAG_MOD_REPLACE, 'xidNumber')
idmapdb.modify(m)
for id_type, xid in samba3_idmap.ids():
if id_type == 'UID':
xid_type = 'ID_TYPE_UID'
elif id_type == 'GID':
xid_type = 'ID_TYPE_GID'
else:
logger.warn('Wrong type of entry in idmap (%s), Ignoring', id_type)
continue
sid = samba3_idmap.get_sid(xid, id_type)
add_idmap_entry(idmapdb, dom_sid(sid), xid, xid_type, logger)
def add_group_from_mapping_entry(samdb, groupmap, logger):
"""Add or modify group from group mapping entry
param samdb: Samba4 SAM database
param groupmap: Groupmap entry
param logger: Logger object
"""
# First try to see if we already have this entry
try:
msg = samdb.search(
base='' % str(groupmap.sid), scope=ldb.SCOPE_BASE)
found = True
except ldb.LdbError as e1:
(ecode, emsg) = e1.args
if ecode == ldb.ERR_NO_SUCH_OBJECT:
found = False
else:
raise ldb.LdbError(ecode, emsg)
if found:
logger.warn('Group already exists sid=%s, groupname=%s existing_groupname=%s, Ignoring.',
str(groupmap.sid), groupmap.nt_name, msg[0]['sAMAccountName'][0])
else:
if groupmap.sid_name_use == lsa.SID_NAME_WKN_GRP:
# In a lot of Samba3 databases, aliases are marked as well known groups
(group_dom_sid, rid) = groupmap.sid.split()
if (group_dom_sid != security.dom_sid(security.SID_BUILTIN)):
return
m = ldb.Message()
# We avoid using the format string to avoid needing to escape the CN values
m.dn = ldb.Dn(samdb, "CN=X,CN=Users")
m.dn.set_component(0, "CN", groupmap.nt_name)
m.dn.add_base(samdb.get_default_basedn())
m['objectClass'] = ldb.MessageElement('group', ldb.FLAG_MOD_ADD, 'objectClass')
m['objectSid'] = ldb.MessageElement(ndr_pack(groupmap.sid), ldb.FLAG_MOD_ADD,
'objectSid')
m['sAMAccountName'] = ldb.MessageElement(groupmap.nt_name, ldb.FLAG_MOD_ADD,
'sAMAccountName')
if groupmap.comment:
m['description'] = ldb.MessageElement(groupmap.comment, ldb.FLAG_MOD_ADD,
'description')
# Fix up incorrect 'well known' groups that are actually builtin (per test above) to be aliases
if groupmap.sid_name_use == lsa.SID_NAME_ALIAS or groupmap.sid_name_use == lsa.SID_NAME_WKN_GRP:
m['groupType'] = ldb.MessageElement(str(dsdb.GTYPE_SECURITY_DOMAIN_LOCAL_GROUP),
ldb.FLAG_MOD_ADD, 'groupType')
try:
samdb.add(m, controls=["relax:0"])
except ldb.LdbError as e:
logger.warn('Could not add group name=%s (%s)', groupmap.nt_name, str(e))
def add_users_to_group(samdb, group, members, logger):
"""Add user/member to group/alias
param samdb: Samba4 SAM database
param group: Groupmap object
param members: List of member SIDs
param logger: Logger object
"""
for member_sid in members:
m = ldb.Message()
m.dn = ldb.Dn(samdb, "" % str(group.sid))
m['a01'] = ldb.MessageElement("" % str(member_sid), ldb.FLAG_MOD_ADD, 'member')
try:
samdb.modify(m)
except ldb.LdbError as e:
(ecode, emsg) = e.args
if ecode == ldb.ERR_ENTRY_ALREADY_EXISTS:
logger.debug("skipped re-adding member '%s' to group '%s': %s", member_sid, group.sid, emsg)
elif ecode == ldb.ERR_NO_SUCH_OBJECT:
raise ProvisioningError("Could not add member '%s' to group '%s' as either group or user record doesn't exist: %s" % (member_sid, group.sid, emsg))
else:
raise ProvisioningError("Could not add member '%s' to group '%s': %s" % (member_sid, group.sid, emsg))
def import_wins(samba4_winsdb, samba3_winsdb):
"""Import settings from a Samba3 WINS database.
:param samba4_winsdb: WINS database to import to
:param samba3_winsdb: WINS database to import from
"""
version_id = 0
for (name, (ttl, ips, nb_flags)) in samba3_winsdb.items():
version_id += 1
type = int(name.split("#", 1)[1], 16)
if type == 0x1C:
rType = 0x2
elif type & 0x80:
if len(ips) > 1:
rType = 0x2
else:
rType = 0x1
else:
if len(ips) > 1:
rType = 0x3
else:
rType = 0x0
if ttl > time.time():
rState = 0x0 # active
else:
rState = 0x1 # released
nType = ((nb_flags & 0x60) >> 5)
samba4_winsdb.add({"dn": "name=%s,type=0x%s" % tuple(name.split("#")),
"type": name.split("#")[1],
"name": name.split("#")[0],
"objectClass": "winsRecord",
"recordType": str(rType),
"recordState": str(rState),
"nodeType": str(nType),
"expireTime": ldb.timestring(ttl),
"isStatic": "0",
"versionID": str(version_id),
"address": ips})
samba4_winsdb.add({"dn": "cn=VERSION",
"cn": "VERSION",
"objectClass": "winsMaxVersion",
"maxVersion": str(version_id)})
SAMBA3_PREDEF_NAMES = {
'HKLM': registry.HKEY_LOCAL_MACHINE,
}
def import_registry(samba4_registry, samba3_regdb):
"""Import a Samba 3 registry database into the Samba 4 registry.
:param samba4_registry: Samba 4 registry handle.
:param samba3_regdb: Samba 3 registry database handle.
"""
def ensure_key_exists(keypath):
(predef_name, keypath) = keypath.split("/", 1)
predef_id = SAMBA3_PREDEF_NAMES[predef_name]
keypath = keypath.replace("/", "\\")
return samba4_registry.create_key(predef_id, keypath)
for key in samba3_regdb.keys():
key_handle = ensure_key_exists(key)
for subkey in samba3_regdb.subkeys(key):
ensure_key_exists(subkey)
for (value_name, (value_type, value_data)) in samba3_regdb.values(key).items():
key_handle.set_value(value_name, value_type, value_data)
def get_posix_attr_from_ldap_backend(logger, ldb_object, base_dn, user, attr):
"""Get posix attributes from a samba3 ldap backend
:param ldbs: a list of ldb connection objects
:param base_dn: the base_dn of the connection
:param user: the user to get the attribute for
:param attr: the attribute to be retrieved
"""
try:
msg = ldb_object.search(base_dn, scope=ldb.SCOPE_SUBTREE,
expression=("(&(objectClass=posixAccount)(uid=%s))"
% (user)), attrs=[attr])
except ldb.LdbError as e:
raise ProvisioningError("Failed to retrieve attribute %s for user %s, the error is: %s" % (attr, user, e))
else:
if msg.count <= 1:
# This will raise KeyError (which is what we want) if there isn't a entry for this user
return msg[0][attr][0]
else:
logger.warning("LDAP entry for user %s contains more than one %s", user, attr)
raise KeyError
def upgrade_from_samba3(samba3, logger, targetdir, session_info=None,
useeadb=False, dns_backend=None, use_ntvfs=False):
"""Upgrade from samba3 database to samba4 AD database
:param samba3: samba3 object
:param logger: Logger object
:param targetdir: samba4 database directory
:param session_info: Session information
"""
serverrole = samba3.lp.server_role()
domainname = samba3.lp.get("workgroup")
realm = samba3.lp.get("realm")
netbiosname = samba3.lp.get("netbios name")
if samba3.lp.get("ldapsam:trusted") is None:
samba3.lp.set("ldapsam:trusted", "yes")
# secrets db
try:
secrets_db = samba3.get_secrets_db()
except IOError as e:
raise ProvisioningError("Could not open '%s', the Samba3 secrets database: %s. Perhaps you specified the incorrect smb.conf, --testparm or --dbdir option?" % (samba3.privatedir_path("secrets.tdb"), str(e)))
if not domainname:
domainname = secrets_db.domains()[0]
logger.warning("No workgroup specified in smb.conf file, assuming '%s'",
domainname)
if not realm:
if serverrole == "ROLE_DOMAIN_BDC" or serverrole == "ROLE_DOMAIN_PDC":
raise ProvisioningError("No realm specified in smb.conf file and being a DC. That upgrade path doesn't work! Please add a 'realm' directive to your old smb.conf to let us know which one you want to use (it is the DNS name of the AD domain you wish to create.")
else:
realm = domainname.upper()
logger.warning("No realm specified in smb.conf file, assuming '%s'",
realm)
# Find machine account and password
next_rid = 1000
try:
machinepass = secrets_db.get_machine_password(netbiosname)
except KeyError:
machinepass = None
if samba3.lp.get("passdb backend").split(":")[0].strip() == "ldapsam":
base_dn = samba3.lp.get("ldap suffix")
ldapuser = samba3.lp.get("ldap admin dn")
ldappass = secrets_db.get_ldap_bind_pw(ldapuser)
if ldappass is None:
raise ProvisioningError("ldapsam passdb backend detected but no LDAP Bind PW found in secrets.tdb for user %s. Please point this tool at the secrets.tdb that was used by the previous installation.")
ldappass = ldappass.decode('utf-8').strip('\x00')
ldap = True
else:
ldapuser = None
ldappass = None
ldap = False
# We must close the direct pytdb database before the C code loads it
secrets_db.close()
# Connect to old password backend
passdb.set_secrets_dir(samba3.lp.get("private dir"))
s3db = samba3.get_sam_db()
# Get domain sid
try:
domainsid = passdb.get_global_sam_sid()
except passdb.error:
raise Exception("Can't find domain sid for '%s', Exiting." % domainname)
# Get machine account, sid, rid
try:
machineacct = s3db.getsampwnam('%s$' % netbiosname)
except passdb.error:
machinerid = None
machinesid = None
else:
machinesid, machinerid = machineacct.user_sid.split()
# Export account policy
logger.info("Exporting account policy")
policy = s3db.get_account_policy()
# Export groups from old passdb backend
logger.info("Exporting groups")
grouplist = s3db.enum_group_mapping()
groupmembers = {}
for group in grouplist:
sid, rid = group.sid.split()
if sid == domainsid:
if rid >= next_rid:
next_rid = rid + 1
# Get members for each group/alias
if group.sid_name_use == lsa.SID_NAME_ALIAS:
try:
members = s3db.enum_aliasmem(group.sid)
groupmembers[str(group.sid)] = members
except passdb.error as e:
logger.warn("Ignoring group '%s' %s listed but then not found: %s",
group.nt_name, group.sid, e)
continue
elif group.sid_name_use == lsa.SID_NAME_DOM_GRP:
try:
members = s3db.enum_group_members(group.sid)
groupmembers[str(group.sid)] = members
except passdb.error as e:
logger.warn("Ignoring group '%s' %s listed but then not found: %s",
group.nt_name, group.sid, e)
continue
elif group.sid_name_use == lsa.SID_NAME_WKN_GRP:
(group_dom_sid, rid) = group.sid.split()
if (group_dom_sid != security.dom_sid(security.SID_BUILTIN)):
logger.warn("Ignoring 'well known' group '%s' (should already be in AD, and have no members)",
group.nt_name)
continue
# A number of buggy databases mix up well known groups and aliases.
try:
members = s3db.enum_aliasmem(group.sid)
groupmembers[str(group.sid)] = members
except passdb.error as e:
logger.warn("Ignoring group '%s' %s listed but then not found: %s",
group.nt_name, group.sid, e)
continue
else:
logger.warn("Ignoring group '%s' %s with sid_name_use=%d",
group.nt_name, group.sid, group.sid_name_use)
continue
# Export users from old passdb backend
logger.info("Exporting users")
userlist = s3db.search_users(0)
userdata = {}
uids = {}
admin_user = None
for entry in userlist:
if machinerid and machinerid == entry['rid']:
continue
username = entry['account_name']
if entry['rid'] < 1000:
logger.info(" Skipping wellknown rid=%d (for username=%s)", entry['rid'], username)
continue
if entry['rid'] >= next_rid:
next_rid = entry['rid'] + 1
user = s3db.getsampwnam(username)
acct_type = (user.acct_ctrl & (samr.ACB_NORMAL |
samr.ACB_WSTRUST |
samr.ACB_SVRTRUST |
samr.ACB_DOMTRUST))
if acct_type == samr.ACB_SVRTRUST:
logger.warn(" Demoting BDC account trust for %s, this DC must be elevated to an AD DC using 'samba-tool domain dcpromo'" % username[:-1])
user.acct_ctrl = (user.acct_ctrl & ~samr.ACB_SVRTRUST) | samr.ACB_WSTRUST
elif acct_type == samr.ACB_DOMTRUST:
logger.warn(" Skipping inter-domain trust from domain %s, this trust must be re-created as an AD trust" % username[:-1])
continue
elif acct_type == (samr.ACB_WSTRUST) and username[-1] != '$':
logger.warn(" Skipping account %s that has ACB_WSTRUST (W) set but does not end in $. This account can not have worked, and is probably left over from a misconfiguration." % username)
continue
elif acct_type == (samr.ACB_NORMAL | samr.ACB_WSTRUST) and username[-1] == '$':
logger.warn(" Fixing account %s which had both ACB_NORMAL (U) and ACB_WSTRUST (W) set. Account will be marked as ACB_WSTRUST (W), i.e. as a domain member" % username)
user.acct_ctrl = (user.acct_ctrl & ~samr.ACB_NORMAL)
elif acct_type == (samr.ACB_NORMAL | samr.ACB_SVRTRUST) and username[-1] == '$':
logger.warn(" Fixing account %s which had both ACB_NORMAL (U) and ACB_SVRTRUST (S) set. Account will be marked as ACB_WSTRUST (S), i.e. as a domain member" % username)
user.acct_ctrl = (user.acct_ctrl & ~samr.ACB_NORMAL)
elif acct_type == 0 and username[-1] != '$':
user.acct_ctrl = (user.acct_ctrl | samr.ACB_NORMAL)
elif (acct_type == samr.ACB_NORMAL or acct_type == samr.ACB_WSTRUST):
pass
else:
raise ProvisioningError("""Failed to upgrade due to invalid account %s, account control flags 0x%08X must have exactly one of
ACB_NORMAL (N, 0x%08X), ACB_WSTRUST (W 0x%08X), ACB_SVRTRUST (S 0x%08X) or ACB_DOMTRUST (D 0x%08X).
Please fix this account before attempting to upgrade again
"""
% (username, user.acct_ctrl,
samr.ACB_NORMAL, samr.ACB_WSTRUST, samr.ACB_SVRTRUST, samr.ACB_DOMTRUST))
userdata[username] = user
try:
uids[username] = s3db.sid_to_id(user.user_sid)[0]
except passdb.error:
try:
uids[username] = pwd.getpwnam(username).pw_uid
except KeyError:
pass
if not admin_user and username.lower() == 'root':
admin_user = username
if username.lower() == 'administrator':
admin_user = username
try:
group_memberships = s3db.enum_group_memberships(user)
for group in group_memberships:
if str(group) in groupmembers:
if user.user_sid not in groupmembers[str(group)]:
groupmembers[str(group)].append(user.user_sid)
else:
groupmembers[str(group)] = [user.user_sid]
except passdb.error as e:
logger.warn("Ignoring group memberships of '%s' %s: %s",
username, user.user_sid, e)
logger.info("Next rid = %d", next_rid)
# Check for same username/groupname
group_names = set([g.nt_name for g in grouplist])
user_names = set([u['account_name'] for u in userlist])
common_names = group_names.intersection(user_names)
if common_names:
logger.error("Following names are both user names and group names:")
for name in common_names:
logger.error(" %s" % name)
raise ProvisioningError("Please remove common user/group names before upgrade.")
# Check for same user sid/group sid
group_sids = set([str(g.sid) for g in grouplist])
if len(grouplist) != len(group_sids):
raise ProvisioningError("Please remove duplicate group sid entries before upgrade.")
user_sids = set(["%s-%u" % (domainsid, u['rid']) for u in userlist])
if len(userlist) != len(user_sids):
raise ProvisioningError("Please remove duplicate user sid entries before upgrade.")
common_sids = group_sids.intersection(user_sids)
if common_sids:
logger.error("Following sids are both user and group sids:")
for sid in common_sids:
logger.error(" %s" % str(sid))
raise ProvisioningError("Please remove duplicate sid entries before upgrade.")
# Get posix attributes from ldap or the os
homes = {}
shells = {}
pgids = {}
if ldap:
creds = Credentials()
creds.guess(samba3.lp)
creds.set_bind_dn(ldapuser)
creds.set_password(ldappass)
urls = samba3.lp.get("passdb backend").split(":", 1)[1].strip('"')
for url in urls.split():
try:
ldb_object = Ldb(url, credentials=creds)
except ldb.LdbError as e:
raise ProvisioningError("Could not open ldb connection to %s, the error message is: %s" % (url, e))
else:
break
logger.info("Exporting posix attributes")
userlist = s3db.search_users(0)
for entry in userlist:
username = entry['account_name']
if username in uids.keys():
try:
if ldap:
homes[username] = get_posix_attr_from_ldap_backend(logger, ldb_object, base_dn, username, "homeDirectory")
else:
homes[username] = pwd.getpwnam(username).pw_dir
except KeyError:
pass
except IndexError:
pass
try:
if ldap:
shells[username] = get_posix_attr_from_ldap_backend(logger, ldb_object, base_dn, username, "loginShell")
else:
shells[username] = pwd.getpwnam(username).pw_shell
except KeyError:
pass
except IndexError:
pass
try:
if ldap:
pgids[username] = get_posix_attr_from_ldap_backend(logger, ldb_object, base_dn, username, "gidNumber")
else:
pgids[username] = pwd.getpwnam(username).pw_gid
except KeyError:
pass
except IndexError:
pass
logger.info("Reading WINS database")
samba3_winsdb = None
try:
samba3_winsdb = samba3.get_wins_db()
except IOError as e:
logger.warn('Cannot open wins database, Ignoring: %s', str(e))
if not (serverrole == "ROLE_DOMAIN_BDC" or serverrole == "ROLE_DOMAIN_PDC"):
dns_backend = "NONE"
# If we found an admin user, set a fake pw that we will override.
# This avoids us printing out an admin password that we won't actually
# set.
if admin_user:
adminpass = generate_random_password(12, 32)
else:
adminpass = None
# Do full provision
result = provision(logger, session_info,
targetdir=targetdir, realm=realm, domain=domainname,
domainsid=domainsid, next_rid=next_rid,
dc_rid=machinerid, adminpass=adminpass,
dom_for_fun_level=dsdb.DS_DOMAIN_FUNCTION_2003,
hostname=netbiosname.lower(), machinepass=machinepass,
serverrole=serverrole, samdb_fill=FILL_FULL,
useeadb=useeadb, dns_backend=dns_backend, use_rfc2307=True,
use_ntvfs=use_ntvfs, skip_sysvolacl=True)
result.report_logger(logger)
# Import WINS database
logger.info("Importing WINS database")
if samba3_winsdb:
import_wins(Ldb(result.paths.winsdb), samba3_winsdb)
# Set Account policy
logger.info("Importing Account policy")
import_sam_policy(result.samdb, policy, logger)
# Migrate IDMAP database
logger.info("Importing idmap database")
import_idmap(result.idmap, samba3, logger)
# Set the s3 context for samba4 configuration
new_lp_ctx = s3param.get_context()
new_lp_ctx.load(result.lp.configfile)
new_lp_ctx.set("private dir", result.lp.get("private dir"))
new_lp_ctx.set("state directory", result.lp.get("state directory"))
new_lp_ctx.set("lock directory", result.lp.get("lock directory"))
# Connect to samba4 backend
s4_passdb = passdb.PDB(new_lp_ctx.get("passdb backend"))
# Start a new transaction (should speed this up a little, due to index churn)
result.samdb.transaction_start()
logger.info("Adding groups")
try:
# Export groups to samba4 backend
logger.info("Importing groups")
for g in grouplist:
# Ignore uninitialized groups (gid = -1)
if g.gid != -1:
add_group_from_mapping_entry(result.samdb, g, logger)
add_ad_posix_idmap_entry(result.samdb, g.sid, g.gid, "ID_TYPE_GID", logger)
add_posix_attrs(samdb=result.samdb, sid=g.sid, name=g.nt_name, nisdomain=domainname.lower(), xid_type="ID_TYPE_GID", logger=logger)
except:
# We need this, so that we do not give even more errors due to not cancelling the transaction
result.samdb.transaction_cancel()
raise
logger.info("Committing 'add groups' transaction to disk")
result.samdb.transaction_commit()
logger.info("Adding users")
# Export users to samba4 backend
logger.info("Importing users")
for username in userdata:
if username.lower() == 'administrator':
if userdata[username].user_sid != dom_sid(str(domainsid) + "-500"):
logger.error("User 'Administrator' in your existing directory has SID %s, expected it to be %s" % (userdata[username].user_sid, dom_sid(str(domainsid) + "-500")))
raise ProvisioningError("User 'Administrator' in your existing directory does not have SID ending in -500")
if username.lower() == 'root':
if userdata[username].user_sid == dom_sid(str(domainsid) + "-500"):
logger.warn('User root has been replaced by Administrator')
else:
logger.warn('User root has been kept in the directory, it should be removed in favour of the Administrator user')
s4_passdb.add_sam_account(userdata[username])
if username in uids:
add_ad_posix_idmap_entry(result.samdb, userdata[username].user_sid, uids[username], "ID_TYPE_UID", logger)
if (username in homes) and (homes[username] is not None) and \
(username in shells) and (shells[username] is not None) and \
(username in pgids) and (pgids[username] is not None):
add_posix_attrs(samdb=result.samdb, sid=userdata[username].user_sid, name=username, nisdomain=domainname.lower(), xid_type="ID_TYPE_UID", home=homes[username], shell=shells[username], pgid=pgids[username], logger=logger)
logger.info("Adding users to groups")
# Start a new transaction (should speed this up a little, due to index churn)
result.samdb.transaction_start()
try:
for g in grouplist:
if str(g.sid) in groupmembers:
add_users_to_group(result.samdb, g, groupmembers[str(g.sid)], logger)
except:
# We need this, so that we do not give even more errors due to not cancelling the transaction
result.samdb.transaction_cancel()
raise
logger.info("Committing 'add users to groups' transaction to disk")
result.samdb.transaction_commit()
# Set password for administrator
if admin_user:
logger.info("Setting password for administrator")
admin_userdata = s4_passdb.getsampwnam("administrator")
admin_userdata.nt_passwd = userdata[admin_user].nt_passwd
if userdata[admin_user].lanman_passwd:
admin_userdata.lanman_passwd = userdata[admin_user].lanman_passwd
admin_userdata.pass_last_set_time = userdata[admin_user].pass_last_set_time
if userdata[admin_user].pw_history:
admin_userdata.pw_history = userdata[admin_user].pw_history
s4_passdb.update_sam_account(admin_userdata)
logger.info("Administrator password has been set to password of user '%s'", admin_user)
if result.server_role == "active directory domain controller":
setsysvolacl(result.samdb, result.paths.netlogon, result.paths.sysvol,
result.paths.root_uid, result.paths.root_gid,
security.dom_sid(result.domainsid), result.names.dnsdomain,
result.names.domaindn, result.lp, use_ntvfs)
# FIXME: import_registry(registry.Registry(), samba3.get_registry())
# FIXME: shares