samba-tool dbcheck: Add --reset-well-known-acls
[nivanova/samba-autobuild/.git] / python / samba / schema.py
1 #
2 # Unix SMB/CIFS implementation.
3 # backend code for provisioning a Samba4 server
4 #
5 # Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007-2008
6 # Copyright (C) Andrew Bartlett <abartlet@samba.org> 2008-2009
7 # Copyright (C) Oliver Liebel <oliver@itc.li> 2008-2009
8 #
9 # This program is free software; you can redistribute it and/or modify
10 # it under the terms of the GNU General Public License as published by
11 # the Free Software Foundation; either version 3 of the License, or
12 # (at your option) any later version.
13 #
14 # This program is distributed in the hope that it will be useful,
15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 # GNU General Public License for more details.
18 #
19 # You should have received a copy of the GNU General Public License
20 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
21 #
22
23 """Functions for setting up a Samba Schema."""
24
25 from base64 import b64encode
26 from samba import read_and_sub_file, substitute_var, check_all_substituted
27 from samba.dcerpc import security
28 from samba.ms_schema import read_ms_schema
29 from samba.ndr import ndr_pack
30 from samba.samdb import SamDB
31 from samba import dsdb
32 from ldb import SCOPE_SUBTREE, SCOPE_ONELEVEL
33 import os
34
35 def get_schema_descriptor(domain_sid, name_map={}):
36     sddl = "O:SAG:SAD:AI(OA;;CR;e12b56b6-0a95-11d1-adbb-00c04fd8d5cd;;SA)" \
37            "(OA;;CR;1131f6aa-9c07-11d1-f79f-00c04fc2dcd2;;ED)" \
38            "(OA;;CR;1131f6ab-9c07-11d1-f79f-00c04fc2dcd2;;ED)" \
39            "(OA;;CR;1131f6ac-9c07-11d1-f79f-00c04fc2dcd2;;ED)" \
40            "(OA;;CR;1131f6aa-9c07-11d1-f79f-00c04fc2dcd2;;BA)" \
41            "(OA;;CR;1131f6ab-9c07-11d1-f79f-00c04fc2dcd2;;BA)" \
42            "(OA;;CR;1131f6ac-9c07-11d1-f79f-00c04fc2dcd2;;BA)" \
43            "(A;CI;RPLCLORC;;;AU)" \
44            "(A;CI;RPWPCRCCLCLORCWOWDSW;;;SA)" \
45            "(A;CI;RPWPCRCCDCLCLORCWOWDSDDTSW;;;SY)" \
46            "(OA;;CR;1131f6ad-9c07-11d1-f79f-00c04fc2dcd2;;ED)" \
47            "(OA;;CR;89e95b76-444d-4c62-991a-0facbeda640c;;ED)" \
48            "(OA;;CR;1131f6ad-9c07-11d1-f79f-00c04fc2dcd2;;BA)" \
49            "(OA;;CR;89e95b76-444d-4c62-991a-0facbeda640c;;BA)" \
50            "(OA;;CR;1131f6aa-9c07-11d1-f79f-00c04fc2dcd2;;ER)" \
51            "(OA;;CR;1131f6ad-9c07-11d1-f79f-00c04fc2dcd2;;ER)" \
52            "(OA;;CR;89e95b76-444d-4c62-991a-0facbeda640c;;ER)" \
53            "S:(AU;SA;WPCCDCWOWDSDDTSW;;;WD)" \
54            "(AU;CISA;WP;;;WD)" \
55            "(AU;SA;CR;;;BA)" \
56            "(AU;SA;CR;;;DU)" \
57            "(OU;SA;CR;e12b56b6-0a95-11d1-adbb-00c04fd8d5cd;;WD)" \
58            "(OU;SA;CR;45ec5156-db7e-47bb-b53f-dbeb2d03c40f;;WD)"
59     sec = security.descriptor.from_sddl(sddl, domain_sid)
60     return ndr_pack(sec)
61
62
63 class Schema(object):
64
65     def __init__(self, domain_sid, invocationid=None, schemadn=None,
66                  files=None, override_prefixmap=None, additional_prefixmap=None):
67         from samba.provision import setup_path
68
69         """Load schema for the SamDB from the AD schema files and
70         samba4_schema.ldif
71
72         :param samdb: Load a schema into a SamDB.
73         :param schemadn: DN of the schema
74
75         Returns the schema data loaded, to avoid double-parsing when then
76         needing to add it to the db
77         """
78
79         self.schemadn = schemadn
80         # We need to have the am_rodc=False just to keep some warnings quiet -
81         # this isn't a real SAM, so it's meaningless.
82         self.ldb = SamDB(global_schema=False, am_rodc=False)
83         if invocationid is not None:
84             self.ldb.set_invocation_id(invocationid)
85
86         self.schema_data = read_ms_schema(
87             setup_path('ad-schema/MS-AD_Schema_2K8_R2_Attributes.txt'),
88             setup_path('ad-schema/MS-AD_Schema_2K8_R2_Classes.txt'))
89
90         if files is not None:
91             for file in files:
92                 self.schema_data += open(file, 'r').read()
93
94         self.schema_data = substitute_var(self.schema_data,
95             {"SCHEMADN": schemadn})
96         check_all_substituted(self.schema_data)
97
98         self.schema_dn_modify = read_and_sub_file(
99             setup_path("provision_schema_basedn_modify.ldif"),
100             {"SCHEMADN": schemadn})
101
102         descr = b64encode(get_schema_descriptor(domain_sid))
103         self.schema_dn_add = read_and_sub_file(
104             setup_path("provision_schema_basedn.ldif"),
105             {"SCHEMADN": schemadn, "DESCRIPTOR": descr})
106
107         if override_prefixmap is not None:
108             self.prefixmap_data = override_prefixmap
109         else:
110             self.prefixmap_data = open(setup_path("prefixMap.txt"), 'r').read()
111
112         if additional_prefixmap is not None:
113             for map in additional_prefixmap:
114                 self.prefixmap_data += "%s\n" % map
115
116         self.prefixmap_data = b64encode(self.prefixmap_data)
117
118         # We don't actually add this ldif, just parse it
119         prefixmap_ldif = "dn: %s\nprefixMap:: %s\n\n" % (self.schemadn, self.prefixmap_data)
120         self.set_from_ldif(prefixmap_ldif, self.schema_data, self.schemadn)
121
122     def set_from_ldif(self, pf, df, dn):
123         dsdb._dsdb_set_schema_from_ldif(self.ldb, pf, df, dn)
124
125     def write_to_tmp_ldb(self, schemadb_path):
126         self.ldb.connect(url=schemadb_path)
127         self.ldb.transaction_start()
128         try:
129             self.ldb.add_ldif("""dn: @ATTRIBUTES
130 linkID: INTEGER
131
132 dn: @INDEXLIST
133 @IDXATTR: linkID
134 @IDXATTR: attributeSyntax
135 """)
136             # These bits of LDIF are supplied when the Schema object is created
137             self.ldb.add_ldif(self.schema_dn_add)
138             self.ldb.modify_ldif(self.schema_dn_modify)
139             self.ldb.add_ldif(self.schema_data)
140         except:
141             self.ldb.transaction_cancel()
142             raise
143         else:
144             self.ldb.transaction_commit()
145
146     # Return a hash with the forward attribute as a key and the back as the
147     # value
148     def linked_attributes(self):
149         return get_linked_attributes(self.schemadn, self.ldb)
150
151     def dnsyntax_attributes(self):
152         return get_dnsyntax_attributes(self.schemadn, self.ldb)
153
154     def convert_to_openldap(self, target, mapping):
155         return dsdb._dsdb_convert_schema_to_openldap(self.ldb, target, mapping)
156
157
158 # Return a hash with the forward attribute as a key and the back as the value
159 def get_linked_attributes(schemadn,schemaldb):
160     attrs = ["linkID", "lDAPDisplayName"]
161     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)
162     attributes = {}
163     for i in range (0, len(res)):
164         expression = "(&(objectclass=attributeSchema)(linkID=%d)(attributeSyntax=2.5.5.1))" % (int(res[i]["linkID"][0])+1)
165         target = schemaldb.searchone(basedn=schemadn,
166                                      expression=expression,
167                                      attribute="lDAPDisplayName",
168                                      scope=SCOPE_SUBTREE)
169         if target is not None:
170             attributes[str(res[i]["lDAPDisplayName"])]=str(target)
171
172     return attributes
173
174
175 def get_dnsyntax_attributes(schemadn,schemaldb):
176     res = schemaldb.search(
177         expression="(&(!(linkID=*))(objectclass=attributeSchema)(attributeSyntax=2.5.5.1))",
178         base=schemadn, scope=SCOPE_ONELEVEL,
179         attrs=["linkID", "lDAPDisplayName"])
180     attributes = []
181     for i in range (0, len(res)):
182         attributes.append(str(res[i]["lDAPDisplayName"]))
183     return attributes
184
185
186 def ldb_with_schema(schemadn="cn=schema,cn=configuration,dc=example,dc=com",
187                     domainsid=None,
188                     override_prefixmap=None):
189     """Load schema for the SamDB from the AD schema files and samba4_schema.ldif
190
191     :param schemadn: DN of the schema
192     :param serverdn: DN of the server
193
194     Returns the schema data loaded as an object, with .ldb being a
195     new ldb with the schema loaded.  This allows certain tests to
196     operate without a remote or local schema.
197     """
198
199     if domainsid is None:
200         domainsid = security.random_sid()
201     else:
202         domainsid = security.dom_sid(domainsid)
203     return Schema(domainsid, schemadn=schemadn,
204         override_prefixmap=override_prefixmap)