1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
#!/usr/bin/env python
# vim: expandtab
#
# Copyright (C) Matthieu Patou <mat@matws.net> 2011
#
# 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 <http://www.gnu.org/licenses/>.
import optparse
import sys
# Allow to run from s4 source directory (without installing samba)
sys.path.insert(0, "bin/python")
import ldb
import samba
import samba.getopt as options
import os
from samba.credentials import DONT_USE_KERBEROS
from samba.auth import system_session
from samba import param
from samba.provision import find_provision_key_parameters, secretsdb_self_join
from samba.upgradehelpers import get_ldbs, get_paths
__docformat__ = "restructuredText"
parser = optparse.OptionParser("provision [options]")
sambaopts = options.SambaOptions(parser)
parser.add_option_group(sambaopts)
parser.add_option_group(options.VersionOptions(parser))
credopts = options.CredentialsOptions(parser)
parser.add_option_group(credopts)
parser.add_option("--oldname",
help="Old DC name")
parser.add_option("--newname",
help="New DC name")
opts = parser.parse_args()[0]
if len(sys.argv) == 1:
opts.interactive = True
lp = sambaopts.get_loadparm()
smbconf = lp.configfile
creds = credopts.get_credentials(lp)
creds.set_kerberos_state(DONT_USE_KERBEROS)
if __name__ == '__main__':
global defSDmodified
defSDmodified = False
# 1) First get files paths
paths = get_paths(param, smbconf=smbconf)
# Get ldbs with the system session, it is needed for searching
# provision parameters
session = system_session()
ldbs = get_ldbs(paths, creds, session, lp)
ldbs.sam.transaction_start()
ldbs.secrets.transaction_start()
if opts.oldname is None or opts.newname is None:
raise Exception("Option oldname or newname is missing")
res = ldbs.sam.search(expression="(&(name=%s)(serverReferenceBL=*))" % opts.oldname)
if res is None or len(res) != 1:
raise Exception("Wrong number of result returned, are you sure of the old name %s" %
opts.oldname)
# Ok got it then check that the new name is not used as well
res2 = ldbs.sam.search(expression="(&(name=%s)(objectclass=computer))" % opts.newname)
if len(res2) != 0:
raise Exception("Seems that %s is a name that already exists, pick another one" %
opts.newname)
names = find_provision_key_parameters(ldbs.sam, ldbs.secrets, ldbs.idmap,
paths, smbconf, lp)
#First rename the entry
# provision put the name in upper case so let's do it too !
newdn = str(res[0].dn).replace("CN=%s" % opts.oldname, "CN=%s" % opts.newname.upper())
dnobj = ldb.Dn(ldbs.sam, newdn)
ldbs.sam.rename(res[0].dn, dnobj)
# Then change password and samaccountname and dnshostname
msg = ldb.Message(dnobj)
machinepass = samba.generate_random_password(128, 255)
mputf16 = machinepass.encode('utf-16-le')
account = "%s$" % opts.newname.upper()
msg["clearTextPassword"] = ldb.MessageElement(mputf16,
ldb.FLAG_MOD_REPLACE,
"clearTextPassword")
msg["sAMAccountName"] = ldb.MessageElement(account,
ldb.FLAG_MOD_REPLACE,
"sAMAccountName")
msg["dNSHostName"] = ldb.MessageElement("%s.%s" % (opts.newname,
names.dnsdomain),
ldb.FLAG_MOD_REPLACE,
"dNSHostName")
ldbs.sam.modify(msg)
# Do a self join one more time to resync the secrets file
res = ldbs.sam.search(expression=("dn=%s" % newdn),
attrs=["msDs-keyVersionNumber", "serverReferenceBL"])
assert(len(res) == 1)
kvno = int(str(res[0]["msDs-keyVersionNumber"]))
serverbldn = ldb.Dn(ldbs.sam, str(res[0]["serverReferenceBL"]))
secrets_msg = ldbs.secrets.search(expression="sAMAccountName=%s$" %
opts.oldname.upper(),
attrs=["secureChannelType"])
secChanType = int(secrets_msg[0]["secureChannelType"][0])
secretsdb_self_join(ldbs.secrets, domain=names.domain,
realm=names.realm,
domainsid=names.domainsid,
dnsdomain=names.dnsdomain,
netbiosname=opts.newname.upper(),
machinepass=machinepass,
key_version_number=kvno,
secure_channel_type=secChanType)
# Update RID set reference as there is no back link for the moment.
res = ldbs.sam.search(expression="(objectClass=rIDSet)", base=newdn, attrs=[])
assert(len(res) == 1)
newridset = str(res[0].dn)
msg = ldb.Message(dnobj)
msg["rIDSetReferences"] = ldb.MessageElement(newridset,
ldb.FLAG_MOD_REPLACE,
"rIDSetReferences")
ldbs.sam.modify(msg)
# Update the server's sites configuration
if False:
# Desactivated for the moment we have a couple of issues with site
# renaming first one is that it's currently forbidden
# second one is that a lot of links are not backlinked
# and so won't be updated when the DN change (ie. fmsowner ...)
serverbl = str(serverbldn)
dnparts = serverbl.split(",")
dnparts[0] = "CN=%s" % opts.newname.upper()
newserverref = ",".join(dnparts)
newserverrefdn = ldb.Dn(ldbs.sam, newserverref)
ldbs.sam.rename(serverbldn, newserverrefdn)
msg = ldb.Message(newserverrefdn)
msg["dNSHostName"] = ldb.MessageElement("%s.%s" % (opts.newname,
names.dnsdomain),
ldb.FLAG_MOD_REPLACE,
"dNSHostName")
ldbs.sam.modify(msg)
try:
ldbs.sam.transaction_prepare_commit()
ldbs.secrets.transaction_prepare_commit()
except Exception:
ldbs.sam.rollback()
ldbs.secrets.rollback()
sys.exit(1)
try:
ldbs.sam.transaction_commit()
ldbs.secrets.transaction_commit()
except Exception:
ldbs.sam.rollback()
ldbs.secrets.rollback()
# All good so far
#print lp.get("private dir")
cf = open(lp.configfile)
ncfname = "%s.new" % lp.configfile
newconf = open(ncfname, 'w')
for l in cf.readlines():
if l.find("netbios name") > 0:
newconf.write("\tnetbios name = %s\n" % opts.newname.upper())
else:
newconf.write(l)
newconf.close()
cf.close()
os.rename(ncfname, lp.configfile)
|
