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# Unix SMB/CIFS implementation.
#
# Claim value type model.
#
# Copyright (C) Catalyst.Net Ltd. 2023
#
# Written by Rob van der Linde <rob@catalyst.net.nz>
#
# 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 .exceptions import NotFound
from .fields import BooleanField, DnField, IntegerField, StringField
from .model import Model
# LDAP Syntax to Value Type CN lookup table.
# These are the lookups used by known AD attributes, add new ones as required.
SYNTAX_TO_VALUE_TYPE_CN = {
"2.5.5.1": "MS-DS-Text", # Object(DS-DN)
"2.5.5.2": "MS-DS-Text", # String(Object-Identifier)
"2.5.5.8": "MS-DS-YesNo", # Boolean
"2.5.5.9": "MS-DS-Number", # Integer
"2.5.5.12": "MS-DS-Text", # String(Unicode)
"2.5.5.15": "MS-DS-Text", # String(NT-Sec-Desc)
"2.5.5.16": "MS-DS-Number", # LargeInteger
}
class ValueType(Model):
description = StringField("description")
display_name = StringField("displayName")
claim_is_single_valued = BooleanField("msDS-ClaimIsSingleValued")
claim_is_value_space_restricted = BooleanField(
"msDS-ClaimIsValueSpaceRestricted")
claim_value_type = IntegerField("msDS-ClaimValueType")
is_possible_values_present = BooleanField("msDS-IsPossibleValuesPresent")
show_in_advanced_view_only = BooleanField("showInAdvancedViewOnly")
# Backlinks
value_type_reference_bl = DnField(
"msDS-ValueTypeReferenceBL", readonly=True)
@staticmethod
def get_base_dn(samdb):
"""Return the base DN for the ValueType model.
:param samdb: SamDB connection
:return: Dn object of container
"""
base_dn = samdb.get_config_basedn()
base_dn.add_child("CN=Value Types,CN=Claims Configuration,CN=Services")
return base_dn
@staticmethod
def get_object_class():
return "msDS-ValueType"
@classmethod
def find(cls, samdb, attribute):
"""Helper function to get ValueType by attribute or raise NotFound.
:param samdb: SamDB connection
:param attribute: AttributeSchema object
:raises: NotFound if not found
:raises: ValueError for unknown attribute syntax
"""
# If attribute is None.
if not attribute:
raise ValueError("Attribute is required for value type lookup.")
# Unknown attribute syntax as it isn't in the lookup table.
syntax = attribute.attribute_syntax
cn = SYNTAX_TO_VALUE_TYPE_CN.get(syntax)
if not cn:
raise ValueError(f"Unable to process attribute syntax {syntax}")
# This should always return something but should still be handled.
value_type = cls.get(samdb, cn=cn)
if value_type is None:
raise NotFound(f"Could not find claim value type for {attribute}.")
return value_type
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