Current File : //lib/python3/dist-packages/samba/functional_level.py
# domain management - common code
#
# Copyright Catlayst .Net Ltd 2017-2023
# Copyright Jelmer Vernooij 2007-2012
#
# 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/>.
#
from samba.dsdb import (
DS_DOMAIN_FUNCTION_2000,
DS_DOMAIN_FUNCTION_2003,
DS_DOMAIN_FUNCTION_2008,
DS_DOMAIN_FUNCTION_2008_R2,
DS_DOMAIN_FUNCTION_2012,
DS_DOMAIN_FUNCTION_2012_R2,
DS_DOMAIN_FUNCTION_2003_MIXED,
DS_DOMAIN_FUNCTION_2016
)
string_version_to_constant = {
"2000": DS_DOMAIN_FUNCTION_2000,
"2003": DS_DOMAIN_FUNCTION_2003,
"2008": DS_DOMAIN_FUNCTION_2008,
"2008_R2": DS_DOMAIN_FUNCTION_2008_R2,
"2012": DS_DOMAIN_FUNCTION_2012,
"2012_R2": DS_DOMAIN_FUNCTION_2012_R2,
"2016": DS_DOMAIN_FUNCTION_2016,
}
def string_to_level(string):
"""Interpret a string indicating a functional level."""
return string_version_to_constant[string]
def level_to_string(level):
"""turn the level enum number into a printable string."""
if level < DS_DOMAIN_FUNCTION_2000:
return "invalid"
strings = {
DS_DOMAIN_FUNCTION_2000: "2000",
DS_DOMAIN_FUNCTION_2003_MIXED:
"2003 with mixed domains/interim (NT4 DC support)",
DS_DOMAIN_FUNCTION_2003: "2003",
DS_DOMAIN_FUNCTION_2008: "2008",
DS_DOMAIN_FUNCTION_2008_R2: "2008 R2",
DS_DOMAIN_FUNCTION_2012: "2012",
DS_DOMAIN_FUNCTION_2012_R2: "2012 R2",
DS_DOMAIN_FUNCTION_2016: "2016",
}
return strings.get(level, "higher than 2016")
def dc_level_from_lp(lp):
"""Return the ad dc functional level as an integer from a LoadParm"""
# I don't like the RuntimeError here, but these "can't happen"
# except by a developer stuffup.
smb_conf_dc_functional_level = lp.get('ad dc functional level')
if smb_conf_dc_functional_level is None:
# This shouldn't be possible, except if the default option
# value is not in the loadparm enum table
raise RuntimeError(f"'ad dc functional level' in smb.conf unrecognised!")
try:
return string_to_level(smb_conf_dc_functional_level)
except KeyError:
# This shouldn't be possible at all, unless the table in
# python/samba/functional_level.py is not a superset of that
# in lib/param/param_table.c
raise RuntimeError(f"'ad dc functional level = {smb_conf_dc_functional_level}'"
" in smb.conf is not valid!")
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