2 # -*- coding: utf-8 -*-
4 # script to verify cached prefixMap on remote
5 # server against the prefixMap stored in Schema NC
7 # Copyright (C) Kamen Mazdrashki <kamenim@samba.org> 2010
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.
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.
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/>.
25 from optparse import OptionParser
27 sys.path.insert(0, "bin/python")
30 import samba.getopt as options
31 from ldb import SCOPE_BASE, SCOPE_SUBTREE
32 from samba.dcerpc import drsuapi, misc, drsblobs
33 from samba.drs_utils import drs_DsBind
34 from samba.samdb import SamDB
35 from samba.auth import system_session
36 from samba.ndr import ndr_pack, ndr_unpack
39 def _samdb_fetch_pfm(samdb):
40 """Fetch prefixMap stored in SamDB using LDB connection"""
41 res = samdb.search(base=samdb.get_schema_basedn(), expression="", scope=SCOPE_BASE, attrs=["*"])
43 pfm = ndr_unpack(drsblobs.prefixMapBlob,
44 str(res[0]['prefixMap']))
47 def _drs_fetch_pfm(server, samdb, creds, lp):
48 """Fetch prefixMap using DRS interface"""
49 binding_str = "ncacn_ip_tcp:%s[print,seal]" % server
51 drs = drsuapi.drsuapi(binding_str, lp, creds)
52 (drs_handle, supported_extensions) = drs_DsBind(drs)
53 print "DRS Handle: %s" % drs_handle
55 req8 = drsuapi.DsGetNCChangesRequest8()
57 dest_dsa = misc.GUID("9c637462-5b8c-4467-aef2-bdb1f57bc4ef")
60 req8.destination_dsa_guid = dest_dsa
61 req8.source_dsa_invocation_id = misc.GUID(samdb.get_invocation_id())
62 req8.naming_context = drsuapi.DsReplicaObjectIdentifier()
63 req8.naming_context.dn = unicode(samdb.get_schema_basedn())
64 req8.highwatermark = drsuapi.DsReplicaHighWaterMark()
65 req8.highwatermark.tmp_highest_usn = 0
66 req8.highwatermark.reserved_usn = 0
67 req8.highwatermark.highest_usn = 0
68 req8.uptodateness_vector = None
69 req8.replica_flags = replica_flags
70 req8.max_object_count = 0
71 req8.max_ndr_size = 402116
74 req8.partial_attribute_set = None
75 req8.partial_attribute_set_ex = None
76 req8.mapping_ctr.num_mappings = 0
77 req8.mapping_ctr.mappings = None
79 (level, ctr) = drs.DsGetNCChanges(drs_handle, 8, req8)
81 # check for schemaInfo element
82 pfm_it = pfm.mappings[-1]
83 assert pfm_it.id_prefix == 0
84 assert pfm_it.oid.length == 21
85 assert pfm_it.oid.binary_oid[0] == 255
86 # remove schemaInfo element
90 def _pfm_verify(drs_pfm, ldb_pfm):
92 if drs_pfm.num_mappings != ldb_pfm.num_mappings:
93 errors.append("Different count of prefixes: drs = %d, ldb = %d"
94 % (drs_pfm.num_mappings, ldb_pfm.num_mappings))
95 count = min(drs_pfm.num_mappings, ldb_pfm.num_mappings)
96 for i in range(0, count):
98 drs_it = drs_pfm.mappings[i]
99 ldb_it = ldb_pfm.mappings[i]
100 if drs_it.id_prefix != ldb_it.id_prefix:
101 it_err.append("id_prefix")
102 if drs_it.oid.length != ldb_it.oid.length:
103 it_err.append("oid.length")
104 if drs_it.oid.binary_oid != ldb_it.oid.binary_oid:
105 it_err.append("oid.binary_oid")
107 errors.append("[%2d] differences in (%s)" % (i, it_err))
110 ########### main code ###########
111 if __name__ == "__main__":
112 # command line parsing
113 parser = OptionParser("pfm_verify.py [options] server")
114 sambaopts = options.SambaOptions(parser)
115 parser.add_option_group(sambaopts)
116 credopts = options.CredentialsOptionsDouble(parser)
117 parser.add_option_group(credopts)
119 (opts, args) = parser.parse_args()
121 lp = sambaopts.get_loadparm()
122 creds = credopts.get_credentials(lp)
126 if not "DC_SERVER" in os.environ.keys():
127 parser.error("You must supply a server")
128 args.append(os.environ["DC_SERVER"])
130 if creds.is_anonymous():
131 parser.error("You must supply credentials")
136 samdb = SamDB(url="ldap://%s" % server,
137 session_info=system_session(),
138 credentials=creds, lp=lp)
140 drs_pfm = _drs_fetch_pfm(server, samdb, creds, lp)
141 ldb_pfm = _samdb_fetch_pfm(samdb)
142 errors = _pfm_verify(drs_pfm, ldb_pfm)
144 print "prefixMap verification errors:"