#!/usr/bin/env python
#
# Raises domain and forest function levels
#
# Copyright Matthias Dieter Wallnoefer 2009
# Copyright Jelmer Vernooij 2009
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# Notice: At the moment we have some more checks to do here on the special
# attributes (consider attribute "msDS-Behavior-Version). This is due to the
# fact that we on s4 LDB don't implement their change policy (only certain
# values, only increments possible...) yet.
import samba.getopt as options
import ldb
from samba.auth import system_session
from samba.netcmd import (
Command,
CommandError,
Option,
)
from samba.samdb import SamDB
from samba.dsdb import (
DS_DOMAIN_FUNCTION_2000,
DS_DOMAIN_FUNCTION_2003,
DS_DOMAIN_FUNCTION_2003_MIXED,
DS_DOMAIN_FUNCTION_2008,
DS_DOMAIN_FUNCTION_2008_R2,
)
class cmd_domainlevel(Command):
"""Raises domain and forest function levels"""
synopsis = "(show | raise <options>)"
takes_optiongroups = {
"sambaopts": options.SambaOptions,
"credopts": options.CredentialsOptions,
"versionopts": options.VersionOptions,
}
takes_options = [
Option("-H", help="LDB URL for database or target server", type=str),
Option("--quiet", help="Be quiet", action="store_true"),
Option("--forest", type="choice", choices=["2003", "2008", "2008_R2"],
help="The forest function level (2003 | 2008 | 2008_R2)"),
Option("--domain", type="choice", choices=["2003", "2008", "2008_R2"],
help="The domain function level (2003 | 2008 | 2008_R2)"),
]
takes_args = ["subcommand"]
def run(self, subcommand, H=None, forest=None, domain=None, quiet=False,
credopts=None, sambaopts=None, versionopts=None):
lp = sambaopts.get_loadparm()
creds = credopts.get_credentials(lp)
samdb = SamDB(url=H, session_info=system_session(),
credentials=creds, lp=lp)
domain_dn = samdb.domain_dn()
res_forest = samdb.search("CN=Partitions,CN=Configuration," + domain_dn,
scope=ldb.SCOPE_BASE, attrs=["msDS-Behavior-Version"])
assert len(res_forest) == 1
res_domain = samdb.search(domain_dn, scope=ldb.SCOPE_BASE,
attrs=["msDS-Behavior-Version", "nTMixedDomain"])
assert len(res_domain) == 1
res_dc_s = samdb.search("CN=Sites,CN=Configuration," + domain_dn,
scope=ldb.SCOPE_SUBTREE, expression="(objectClass=nTDSDSA)",
attrs=["msDS-Behavior-Version"])
assert len(res_dc_s) >= 1
try:
level_forest = int(res_forest[0]["msDS-Behavior-Version"][0])
level_domain = int(res_domain[0]["msDS-Behavior-Version"][0])
level_domain_mixed = int(res_domain[0]["nTMixedDomain"][0])
min_level_dc = int(res_dc_s[0]["msDS-Behavior-Version"][0]) # Init value
for msg in res_dc_s:
if int(msg["msDS-Behavior-Version"][0]) < min_level_dc:
min_level_dc = int(msg["msDS-Behavior-Version"][0])
if level_forest < 0 or level_domain < 0:
raise CommandError("Domain and/or forest function level(s) is/are invalid. Correct them or reprovision!")
if min_level_dc < 0:
raise CommandError("Lowest function level of a DC is invalid. Correct this or reprovision!")
if level_forest > level_domain:
raise CommandError("Forest function level is higher than the domain level(s). Correct this or reprovision!")
if level_domain > min_level_dc:
raise CommandError("Domain function level is higher than the lowest function level of a DC. Correct this or reprovision!")
except KeyError:
raise CommandError("Could not retrieve the actual domain, forest level and/or lowest DC function level!")
if subcommand == "show":
self.message("Domain and forest function level for domain '%s'" % domain_dn)
if level_forest == DS_DOMAIN_FUNCTION_2000 and level_domain_mixed != 0:
self.message("\nATTENTION: You run SAMBA 4 on a forest function level lower than Windows 2000 (Native). This isn't supported! Please raise!")
if level_domain == DS_DOMAIN_FUNCTION_2000 and level_domain_mixed != 0:
self.message("\nATTENTION: You run SAMBA 4 on a domain function level lower than Windows 2000 (Native). This isn't supported! Please raise!")
if min_level_dc == DS_DOMAIN_FUNCTION_2000 and level_domain_mixed != 0:
self.message("\nATTENTION: You run SAMBA 4 on a lowest function level of a DC lower than Windows 2003. This isn't supported! Please step-up or upgrade the concerning DC(s)!")
self.message("")
if level_forest == DS_DOMAIN_FUNCTION_2000:
outstr = "2000"
elif level_forest == DS_DOMAIN_FUNCTION_2003_MIXED:
outstr = "2003 with mixed domains/interim (NT4 DC support)"
elif level_forest == DS_DOMAIN_FUNCTION_2003:
outstr = "2003"
elif level_forest == DS_DOMAIN_FUNCTION_2008:
outstr = "2008"
elif level_forest == DS_DOMAIN_FUNCTION_2008_R2:
outstr = "2008 R2"
else:
outstr = "higher than 2008 R2"
self.message("Forest function level: (Windows) " + outstr)
if level_domain == DS_DOMAIN_FUNCTION_2000 and level_domain_mixed != 0:
outstr = "2000 mixed (NT4 DC support)"
elif level_domain == DS_DOMAIN_FUNCTION_2000 and level_domain_mixed == 0:
outstr = "2000"
elif level_domain == DS_DOMAIN_FUNCTION_2003_MIXED:
outstr = "2003 with mixed domains/interim (NT4 DC support)"
elif level_domain == DS_DOMAIN_FUNCTION_2003:
outstr = "2003"
elif level_domain == DS_DOMAIN_FUNCTION_2008:
outstr = "2008"
elif level_domain == DS_DOMAIN_FUNCTION_2008_R2:
outstr = "2008 R2"
else:
outstr = "higher than 2008 R2"
self.message("Domain function level: (Windows) " + outstr)
if min_level_dc == DS_DOMAIN_FUNCTION_2000:
outstr = "2000"
elif min_level_dc == DS_DOMAIN_FUNCTION_2003:
outstr = "2003"
elif min_level_dc == DS_DOMAIN_FUNCTION_2008:
outstr = "2008"
elif min_level_dc == DS_DOMAIN_FUNCTION_2008_R2:
outstr = "2008 R2"
else:
outstr = "higher than 2008 R2"
self.message("Lowest function level of a DC: (Windows) " + outstr)
elif subcommand == "raise":
msgs = []
if domain is not None:
if domain == "2003":
new_level_domain = DS_DOMAIN_FUNCTION_2003
elif domain == "2008":
new_level_domain = DS_DOMAIN_FUNCTION_2008
elif domain == "2008_R2":
new_level_domain = DS_DOMAIN_FUNCTION_2008_R2
if new_level_domain <= level_domain and level_domain_mixed == 0:
raise CommandError("Domain function level can't be smaller equal to the actual one!")
if new_level_domain > min_level_dc:
raise CommandError("Domain function level can't be higher than the lowest function level of a DC!")
# Deactivate mixed/interim domain support
if level_domain_mixed != 0:
# Directly on the base DN
m = ldb.Message()
m.dn = ldb.Dn(samdb, domain_dn)
m["nTMixedDomain"] = ldb.MessageElement("0",
ldb.FLAG_MOD_REPLACE, "nTMixedDomain")
samdb.modify(m)
# Under partitions
m = ldb.Message()
m.dn = ldb.Dn(samdb, "CN=" + lp.get("workgroup")
+ ",CN=Partitions,CN=Configuration," + domain_dn)
m["nTMixedDomain"] = ldb.MessageElement("0",
ldb.FLAG_MOD_REPLACE, "nTMixedDomain")
try:
samdb.modify(m)
except LdbError, (num, _):
if num != ldb.ERR_UNWILLING_TO_PERFORM:
raise
# Directly on the base DN
m = ldb.Message()
m.dn = ldb.Dn(samdb, domain_dn)
m["msDS-Behavior-Version"]= ldb.MessageElement(
str(new_level_domain), ldb.FLAG_MOD_REPLACE,
"msDS-Behavior-Version")
samdb.modify(m)
# Under partitions
m = ldb.Message()
m.dn = ldb.Dn(samdb, "CN=" + lp.get("workgroup")
+ ",CN=Partitions,CN=Configuration," + domain_dn)
m["msDS-Behavior-Version"]= ldb.MessageElement(
str(new_level_domain), ldb.FLAG_MOD_REPLACE,
"msDS-Behavior-Version")
try:
samdb.modify(m)
except LdbError, (num, _):
if num != ldb.ERR_UNWILLING_TO_PERFORM:
raise
level_domain = new_level_domain
msgs.append("Domain function level changed!")
if forest is not None:
if forest == "2003":
new_level_forest = DS_DOMAIN_FUNCTION_2003
elif forest == "2008":
new_level_forest = DS_DOMAIN_FUNCTION_2008
elif forest == "2008_R2":
new_level_forest = DS_DOMAIN_FUNCTION_2008_R2
if new_level_forest <= level_forest:
raise CommandError("Forest function level can't be smaller equal to the actual one!")
if new_level_forest > level_domain:
raise CommandError("Forest function level can't be higher than the domain function level(s). Please raise it/them first!")
m = ldb.Message()
m.dn = ldb.Dn(samdb, "CN=Partitions,CN=Configuration,"
+ domain_dn)
m["msDS-Behavior-Version"]= ldb.MessageElement(
str(new_level_forest), ldb.FLAG_MOD_REPLACE,
"msDS-Behavior-Version")
samdb.modify(m)
msgs.append("Forest function level changed!")
msgs.append("All changes applied successfully!")
self.message("\n".join(msgs))
else:
raise CommandError("Wrong argument '%s'!" % subcommand)