# # Unix SMB/CIFS implementation. # backend code for provisioning a Samba4 server # # Copyright (C) Jelmer Vernooij 2007-2008 # Copyright (C) Andrew Bartlett 2008-2009 # Copyright (C) Oliver Liebel 2008-2009 # # Based on the original in EJS: # Copyright (C) Andrew Tridgell 2005 # # 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 . # """Functions for setting up a Samba Schema.""" from base64 import b64encode from ms_schema import read_ms_schema from samba.dcerpc import security from samba import read_and_sub_file, substitute_var, check_all_substituted from samba import Ldb from samba.ndr import ndr_pack from ldb import SCOPE_SUBTREE, SCOPE_ONELEVEL, SCOPE_BASE import os def get_schema_descriptor(domain_sid): sddl = "O:SAG:SAD:(A;CI;RPLCLORC;;;AU)(A;CI;RPWPCRCCLCLORCWOWDSW;;;SA)" \ "(A;CI;RPWPCRCCDCLCLORCWOWDSDDTSW;;;SY)" \ "(OA;;CR;1131f6ad-9c07-11d1-f79f-00c04fc2dcd2;;ED)" \ "(OA;;CR;89e95b76-444d-4c62-991a-0facbeda640c;;ED)" \ "(OA;;CR;1131f6ad-9c07-11d1-f79f-00c04fc2dcd2;;BA)" \ "(OA;;CR;89e95b76-444d-4c62-991a-0facbeda640c;;BA)" \ "S:(AU;SA;WPCCDCWOWDSDDTSW;;;WD)" \ "(AU;CISA;WP;;;WD)(AU;SA;CR;;;BA)" \ "(AU;SA;CR;;;DU)(OU;SA;CR;e12b56b6-0a95-11d1-adbb-00c04fd8d5cd;;WD)" \ "(OU;SA;CR;45ec5156-db7e-47bb-b53f-dbeb2d03c40f;;WD)" sec = security.descriptor.from_sddl(sddl, domain_sid) return ndr_pack(sec) class Schema(object): def __init__(self, setup_path, domain_sid, schemadn=None, serverdn=None, files=None, prefixmap=None): """Load schema for the SamDB from the AD schema files and samba4_schema.ldif :param samdb: Load a schema into a SamDB. :param setup_path: Setup path function. :param schemadn: DN of the schema :param serverdn: DN of the server Returns the schema data loaded, to avoid double-parsing when then needing to add it to the db """ self.schemadn = schemadn self.ldb = Ldb() self.schema_data = read_ms_schema(setup_path('ad-schema/MS-AD_Schema_2K8_Attributes.txt'), setup_path('ad-schema/MS-AD_Schema_2K8_Classes.txt')) if files is not None: for file in files: self.schema_data += open(file, 'r').read() self.schema_data = substitute_var(self.schema_data, {"SCHEMADN": schemadn}) check_all_substituted(self.schema_data) self.schema_dn_modify = read_and_sub_file(setup_path("provision_schema_basedn_modify.ldif"), {"SCHEMADN": schemadn, "SERVERDN": serverdn, }) descr = b64encode(get_schema_descriptor(domain_sid)) self.schema_dn_add = read_and_sub_file(setup_path("provision_schema_basedn.ldif"), {"SCHEMADN": schemadn, "DESCRIPTOR": descr }) self.prefixmap_data = open(setup_path("prefixMap.txt"), 'r').read() if prefixmap is not None: for map in prefixmap: self.prefixmap_data += "%s\n" % map self.prefixmap_data = b64encode(self.prefixmap_data) # We don't actually add this ldif, just parse it prefixmap_ldif = "dn: cn=schema\nprefixMap:: %s\n\n" % self.prefixmap_data self.ldb.set_schema_from_ldif(prefixmap_ldif, self.schema_data) def write_to_tmp_ldb(self, schemadb_path): self.ldb.connect(schemadb_path) self.ldb.transaction_start() self.ldb.add_ldif("""dn: @ATTRIBUTES linkID: INTEGER dn: @INDEXLIST @IDXATTR: linkID @IDXATTR: attributeSyntax """) # These bits of LDIF are supplied when the Schema object is created self.ldb.add_ldif(self.schema_dn_add) self.ldb.modify_ldif(self.schema_dn_modify) self.ldb.add_ldif(self.schema_data) self.ldb.transaction_commit() # Return a hash with the forward attribute as a key and the back as the value def linked_attributes(self): return get_linked_attributes(self.schemadn, self.ldb) def dnsyntax_attributes(self): return get_dnsyntax_attributes(self.schemadn, self.ldb) # Return a hash with the forward attribute as a key and the back as the value def get_linked_attributes(schemadn,schemaldb): attrs = ["linkID", "lDAPDisplayName"] res = schemaldb.search(expression="(&(linkID=*)(!(linkID:1.2.840.113556.1.4.803:=1))(objectclass=attributeSchema)(attributeSyntax=2.5.5.1))", base=schemadn, scope=SCOPE_ONELEVEL, attrs=attrs) attributes = {} for i in range (0, len(res)): expression = "(&(objectclass=attributeSchema)(linkID=%d)(attributeSyntax=2.5.5.1))" % (int(res[i]["linkID"][0])+1) target = schemaldb.searchone(basedn=schemadn, expression=expression, attribute="lDAPDisplayName", scope=SCOPE_SUBTREE) if target is not None: attributes[str(res[i]["lDAPDisplayName"])]=str(target) return attributes def get_dnsyntax_attributes(schemadn,schemaldb): attrs = ["linkID", "lDAPDisplayName"] res = schemaldb.search(expression="(&(!(linkID=*))(objectclass=attributeSchema)(attributeSyntax=2.5.5.1))", base=schemadn, scope=SCOPE_ONELEVEL, attrs=attrs) attributes = [] for i in range (0, len(res)): attributes.append(str(res[i]["lDAPDisplayName"])) return attributes def ldb_with_schema(setup_dir=None, schemadn="cn=schema,cn=configuration,dc=example,dc=com", serverdn="cn=server,cn=servers,cn=default-first-site-name,cn=sites,cn=cn=configuration,dc=example,dc=com", domainsid=None): """Load schema for the SamDB from the AD schema files and samba4_schema.ldif :param setup_dir: Setup path :param schemadn: DN of the schema :param serverdn: DN of the server Returns the schema data loaded as an object, with .ldb being a new ldb with the schema loaded. This allows certain tests to operate without a remote or local schema. """ def setup_path(file): return os.path.join(setup_dir, file) if domainsid is None: domainsid = security.random_sid() else: domainsid = security.dom_sid(domainsid) return Schema(setup_path, domainsid, schemadn=schemadn, serverdn=serverdn)