2f90ac7122dbe0a61928d7d791cf0abdb8923c69
[ira/wip.git] / source4 / scripting / 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 # Based on the original in EJS:
10 # Copyright (C) Andrew Tridgell <tridge@samba.org> 2005
11 #
12 # This program is free software; you can redistribute it and/or modify
13 # it under the terms of the GNU General Public License as published by
14 # the Free Software Foundation; either version 3 of the License, or
15 # (at your option) any later version.
16 #   
17 # This program is distributed in the hope that it will be useful,
18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20 # GNU General Public License for more details.
21 #   
22 # You should have received a copy of the GNU General Public License
23 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
24 #
25
26 """Functions for setting up a Samba Schema."""
27
28 from base64 import b64encode
29 from ms_schema import read_ms_schema
30 from samba.dcerpc import security
31 from samba import read_and_sub_file, substitute_var, check_all_substituted
32 from samba import Ldb
33 from samba.ndr import ndr_pack
34 from ldb import SCOPE_SUBTREE, SCOPE_ONELEVEL, SCOPE_BASE
35 import os
36
37 def get_schema_descriptor(domain_sid):
38     sddl = "O:SAG:SAD:(A;CI;RPLCLORC;;;AU)(A;CI;RPWPCRCCLCLORCWOWDSW;;;SA)" \
39            "(A;CI;RPWPCRCCDCLCLORCWOWDSDDTSW;;;SY)" \
40            "(OA;;CR;1131f6ad-9c07-11d1-f79f-00c04fc2dcd2;;ED)" \
41            "(OA;;CR;89e95b76-444d-4c62-991a-0facbeda640c;;ED)" \
42            "(OA;;CR;1131f6ad-9c07-11d1-f79f-00c04fc2dcd2;;BA)" \
43            "(OA;;CR;89e95b76-444d-4c62-991a-0facbeda640c;;BA)" \
44            "S:(AU;SA;WPCCDCWOWDSDDTSW;;;WD)" \
45            "(AU;CISA;WP;;;WD)(AU;SA;CR;;;BA)" \
46            "(AU;SA;CR;;;DU)(OU;SA;CR;e12b56b6-0a95-11d1-adbb-00c04fd8d5cd;;WD)" \
47            "(OU;SA;CR;45ec5156-db7e-47bb-b53f-dbeb2d03c40f;;WD)"
48     sec = security.descriptor.from_sddl(sddl, domain_sid)
49     return b64encode(ndr_pack(sec))
50
51    
52 class Schema(object):
53     def __init__(self, setup_path, domain_sid, schemadn=None,
54                  serverdn=None):
55         """Load schema for the SamDB from the AD schema files and samba4_schema.ldif
56         
57         :param samdb: Load a schema into a SamDB.
58         :param setup_path: Setup path function.
59         :param schemadn: DN of the schema
60         :param serverdn: DN of the server
61         
62         Returns the schema data loaded, to avoid double-parsing when then needing to add it to the db
63         """
64
65         self.schemadn = schemadn
66         self.ldb = Ldb()
67         self.schema_data = read_ms_schema(setup_path('ad-schema/MS-AD_Schema_2K8_Attributes.txt'),
68                                           setup_path('ad-schema/MS-AD_Schema_2K8_Classes.txt'))
69         self.schema_data += open(setup_path("schema_samba4.ldif"), 'r').read()
70         self.schema_data = substitute_var(self.schema_data, {"SCHEMADN": schemadn})
71         check_all_substituted(self.schema_data)
72
73         self.schema_dn_modify = read_and_sub_file(setup_path("provision_schema_basedn_modify.ldif"),
74                                                   {"SCHEMADN": schemadn,
75                                                    "SERVERDN": serverdn,
76                                                    })
77
78         descr = get_schema_descriptor(domain_sid)
79         self.schema_dn_add = read_and_sub_file(setup_path("provision_schema_basedn.ldif"),
80                                                {"SCHEMADN": schemadn,
81                                                 "DESCRIPTOR": descr
82                                                 })
83
84         prefixmap = open(setup_path("prefixMap.txt"), 'r').read()
85         prefixmap = b64encode(prefixmap)
86
87         
88
89         # We don't actually add this ldif, just parse it
90         prefixmap_ldif = "dn: cn=schema\nprefixMap:: %s\n\n" % prefixmap
91         self.ldb.set_schema_from_ldif(prefixmap_ldif, self.schema_data)
92
93     def write_to_tmp_ldb(self, schemadb_path):
94         self.ldb.connect(schemadb_path)
95         self.ldb.transaction_start()
96     
97         self.ldb.add_ldif("""dn: @ATTRIBUTES
98 linkID: INTEGER
99
100 dn: @INDEXLIST
101 @IDXATTR: linkID
102 @IDXATTR: attributeSyntax
103 """)
104         # These bits of LDIF are supplied when the Schema object is created
105         self.ldb.add_ldif(self.schema_dn_add)
106         self.ldb.modify_ldif(self.schema_dn_modify)
107         self.ldb.add_ldif(self.schema_data)
108         self.ldb.transaction_commit()
109
110     # Return a hash with the forward attribute as a key and the back as the value 
111     def linked_attributes(self):
112         return get_linked_attributes(self.schemadn, self.ldb)
113
114     def dnsyntax_attributes(self):
115         return get_dnsyntax_attributes(self.schemadn, self.ldb)
116
117 # Return a hash with the forward attribute as a key and the back as the value 
118 def get_linked_attributes(schemadn,schemaldb):
119     attrs = ["linkID", "lDAPDisplayName"]
120     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)
121     attributes = {}
122     for i in range (0, len(res)):
123         expression = "(&(objectclass=attributeSchema)(linkID=%d)(attributeSyntax=2.5.5.1))" % (int(res[i]["linkID"][0])+1)
124         target = schemaldb.searchone(basedn=schemadn, 
125                                      expression=expression, 
126                                      attribute="lDAPDisplayName", 
127                                      scope=SCOPE_SUBTREE)
128         if target is not None:
129             attributes[str(res[i]["lDAPDisplayName"])]=str(target)
130             
131     return attributes
132
133 def get_dnsyntax_attributes(schemadn,schemaldb):
134     attrs = ["linkID", "lDAPDisplayName"]
135     res = schemaldb.search(expression="(&(!(linkID=*))(objectclass=attributeSchema)(attributeSyntax=2.5.5.1))", base=schemadn, scope=SCOPE_ONELEVEL, attrs=attrs)
136     attributes = []
137     for i in range (0, len(res)):
138         attributes.append(str(res[i]["lDAPDisplayName"]))
139         
140     return attributes
141
142 def ldb_with_schema(setup_dir=None, schemadn="cn=schema,cn=configuration,dc=example,dc=com", 
143                     serverdn="cn=server,cn=servers,cn=default-first-site-name,cn=sites,cn=cn=configuration,dc=example,dc=com",
144                     domainsid=None):
145     """Load schema for the SamDB from the AD schema files and samba4_schema.ldif
146     
147     :param setup_dir: Setup path
148     :param schemadn: DN of the schema
149     :param serverdn: DN of the server
150     
151     Returns the schema data loaded as an object, with .ldb being a
152     new ldb with the schema loaded.  This allows certain tests to
153     operate without a remote or local schema.
154     """
155     
156     def setup_path(file):
157         return os.path.join(setup_dir, file)
158
159     if domainsid is None:
160         domainsid = security.random_sid()
161     else:
162         domainsid = security.dom_sid(domainsid)
163     return Schema(setup_path, domainsid, schemadn=schemadn, serverdn=serverdn)