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/>.
23 from __future__ import print_function
26 from optparse import OptionParser
28 sys.path.insert(0, "bin/python")
31 import samba.getopt as options
32 from ldb import SCOPE_BASE, SCOPE_SUBTREE
33 from samba.dcerpc import drsuapi, misc, drsblobs
34 from samba.drs_utils import drs_DsBind
35 from samba.samdb import SamDB
36 from samba.auth import system_session
37 from samba.ndr import ndr_pack, ndr_unpack
40 def _samdb_fetch_pfm(samdb):
41 """Fetch prefixMap stored in SamDB using LDB connection"""
42 res = samdb.search(base=samdb.get_schema_basedn(), expression="", scope=SCOPE_BASE, attrs=["*"])
44 pfm = ndr_unpack(drsblobs.prefixMapBlob,
45 str(res[0]['prefixMap']))
47 pfm_schi = _samdb_fetch_schi(samdb)
49 return (pfm.ctr, pfm_schi)
52 def _samdb_fetch_schi(samdb):
53 """Fetch schemaInfo stored in SamDB using LDB connection"""
54 res = samdb.search(base=samdb.get_schema_basedn(), expression="", scope=SCOPE_BASE, attrs=["*"])
56 if 'schemaInfo' in res[0]:
57 pfm_schi = ndr_unpack(drsblobs.schemaInfoBlob,
58 str(res[0]['schemaInfo']))
60 pfm_schi = drsblobs.schemaInfoBlob()
61 pfm_schi.marker = 0xFF
65 def _drs_fetch_pfm(server, samdb, creds, lp):
66 """Fetch prefixMap using DRS interface"""
67 binding_str = "ncacn_ip_tcp:%s[print,seal]" % server
69 drs = drsuapi.drsuapi(binding_str, lp, creds)
70 (drs_handle, supported_extensions) = drs_DsBind(drs)
71 print("DRS Handle: %s" % drs_handle)
73 req8 = drsuapi.DsGetNCChangesRequest8()
75 dest_dsa = misc.GUID("9c637462-5b8c-4467-aef2-bdb1f57bc4ef")
78 req8.destination_dsa_guid = dest_dsa
79 req8.source_dsa_invocation_id = misc.GUID(samdb.get_invocation_id())
80 req8.naming_context = drsuapi.DsReplicaObjectIdentifier()
81 req8.naming_context.dn = unicode(samdb.get_schema_basedn())
82 req8.highwatermark = drsuapi.DsReplicaHighWaterMark()
83 req8.highwatermark.tmp_highest_usn = 0
84 req8.highwatermark.reserved_usn = 0
85 req8.highwatermark.highest_usn = 0
86 req8.uptodateness_vector = None
87 req8.replica_flags = replica_flags
88 req8.max_object_count = 0
89 req8.max_ndr_size = 402116
92 req8.partial_attribute_set = None
93 req8.partial_attribute_set_ex = None
94 req8.mapping_ctr.num_mappings = 0
95 req8.mapping_ctr.mappings = None
97 (level, ctr) = drs.DsGetNCChanges(drs_handle, 8, req8)
99 # check for schemaInfo element
100 pfm_it = pfm.mappings[-1]
101 assert pfm_it.id_prefix == 0
102 assert pfm_it.oid.length == 21
104 for x in pfm_it.oid.binary_oid:
106 pfm_schi = ndr_unpack(drsblobs.schemaInfoBlob, s)
107 assert pfm_schi.marker == 0xFF
108 # remove schemaInfo element
109 pfm.num_mappings -= 1
110 return (pfm, pfm_schi)
113 def _pfm_verify(drs_pfm, ldb_pfm):
115 if drs_pfm.num_mappings != ldb_pfm.num_mappings:
116 errors.append("Different count of prefixes: drs = %d, ldb = %d"
117 % (drs_pfm.num_mappings, ldb_pfm.num_mappings))
118 count = min(drs_pfm.num_mappings, ldb_pfm.num_mappings)
119 for i in range(0, count):
121 drs_it = drs_pfm.mappings[i]
122 ldb_it = ldb_pfm.mappings[i]
123 if drs_it.id_prefix != ldb_it.id_prefix:
124 it_err.append("id_prefix")
125 if drs_it.oid.length != ldb_it.oid.length:
126 it_err.append("oid.length")
127 if drs_it.oid.binary_oid != ldb_it.oid.binary_oid:
128 it_err.append("oid.binary_oid")
130 errors.append("[%2d] differences in (%s)" % (i, it_err))
134 def _pfm_schi_verify(drs_schi, ldb_schi):
136 print(drs_schi.revision)
137 print(drs_schi.invocation_id)
138 if drs_schi.marker != ldb_schi.marker:
139 errors.append("Different marker in schemaInfo: drs = %d, ldb = %d"
140 % (drs_schi.marker, ldb_schi.marker))
141 if drs_schi.revision != ldb_schi.revision:
142 errors.append("Different revision in schemaInfo: drs = %d, ldb = %d"
143 % (drs_schi.revision, ldb_schi.revision))
144 if drs_schi.invocation_id != ldb_schi.invocation_id:
145 errors.append("Different invocation_id in schemaInfo: drs = %s, ldb = %s"
146 % (drs_schi.invocation_id, ldb_schi.invocation_id))
150 ########### main code ###########
151 if __name__ == "__main__":
152 # command line parsing
153 parser = OptionParser("pfm_verify.py [options] server")
154 sambaopts = options.SambaOptions(parser)
155 parser.add_option_group(sambaopts)
156 credopts = options.CredentialsOptionsDouble(parser)
157 parser.add_option_group(credopts)
159 (opts, args) = parser.parse_args()
161 lp = sambaopts.get_loadparm()
162 creds = credopts.get_credentials(lp)
166 if not "DC_SERVER" in os.environ.keys():
167 parser.error("You must supply a server")
168 args.append(os.environ["DC_SERVER"])
170 if creds.is_anonymous():
171 parser.error("You must supply credentials")
176 samdb = SamDB(url="ldap://%s" % server,
177 session_info=system_session(lp),
178 credentials=creds, lp=lp)
181 (drs_pfm, drs_schi) = _drs_fetch_pfm(server, samdb, creds, lp)
182 (ldb_pfm, ldb_schi) = _samdb_fetch_pfm(samdb)
184 errors = _pfm_verify(drs_pfm, ldb_pfm)
186 print("prefixMap verification errors:")
190 errors = _pfm_schi_verify(drs_schi, ldb_schi)
192 print("schemaInfo verification errors:")