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# rodc related commands
#
# Copyright Andrew Tridgell 2010
#
# 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/>.
#
from samba.netcmd import Command, CommandError, Option, SuperCommand
import samba.getopt as options
from samba.samdb import SamDB
from samba.auth import system_session
import ldb
from samba.dcerpc import misc, drsuapi
from samba.drs_utils import drs_Replicate
import sys
class RODCException(Exception):
def __init__(self, value):
self.value = value
def __str__(self):
return "%s: %s" % (self.__class__.__name__, self.value)
class NamingError(RODCException):
pass
class ReplicationError(RODCException):
pass
class cmd_rodc_preload(Command):
"""Preload accounts for an RODC. Multiple accounts may be requested."""
synopsis = "%prog (<SID>|<DN>|<accountname>)+ ... [options]"
takes_optiongroups = {
"sambaopts": options.SambaOptions,
"versionopts": options.VersionOptions,
"credopts": options.CredentialsOptions,
}
takes_options = [
Option("--server", help="DC to use", type=str),
Option("--file", help="Read account list from a file, or - for stdin (one per line)", type=str),
Option("--ignore-errors", help="When preloading multiple accounts, skip any failing accounts", action="store_true"),
]
takes_args = ["account*"]
def get_dn(self, samdb, account):
"""work out what DN they meant"""
# we accept the account in SID, accountname or DN form
if account[0:2] == 'S-':
res = samdb.search(base="<SID=%s>" % account,
expression="objectclass=user",
scope=ldb.SCOPE_BASE, attrs=[])
elif account.find('=') >= 0:
res = samdb.search(base=account,
expression="objectclass=user",
scope=ldb.SCOPE_BASE, attrs=[])
else:
res = samdb.search(expression="(&(samAccountName=%s)(objectclass=user))" % ldb.binary_encode(account),
scope=ldb.SCOPE_SUBTREE, attrs=[])
if len(res) != 1:
raise NamingError("Failed to find account '%s'" % account)
return str(res[0]["dn"])
def run(self, *accounts, **kwargs):
sambaopts = kwargs.get("sambaopts")
credopts = kwargs.get("credopts")
server = kwargs.get("server")
accounts_file = kwargs.get("file")
ignore_errors = kwargs.get("ignore_errors")
if server is None:
raise Exception("You must supply a server")
if accounts_file is not None:
accounts = []
if accounts_file == "-":
for line in sys.stdin:
accounts.append(line.strip())
else:
for line in open(accounts_file, 'r'):
accounts.append(line.strip())
lp = sambaopts.get_loadparm()
creds = credopts.get_credentials(lp, fallback_machine=True)
# connect to the remote and local SAMs
samdb = SamDB(url="ldap://%s" % server,
session_info=system_session(),
credentials=creds, lp=lp)
local_samdb = SamDB(url=None, session_info=system_session(),
credentials=creds, lp=lp)
destination_dsa_guid = misc.GUID(local_samdb.get_ntds_GUID())
binding_options = "seal"
if lp.log_level() >= 9:
binding_options += ",print"
repl = drs_Replicate("ncacn_ip_tcp:%s[%s]" % (server, binding_options),
lp, creds,
local_samdb, destination_dsa_guid)
errors = []
for account in accounts:
# work out the source and destination GUIDs
dc_ntds_dn = samdb.get_dsServiceName()
res = samdb.search(base=dc_ntds_dn, scope=ldb.SCOPE_BASE, attrs=["invocationId"])
source_dsa_invocation_id = misc.GUID(local_samdb.schema_format_value("objectGUID", res[0]["invocationId"][0]))
try:
dn = self.get_dn(samdb, account)
except RODCException as e:
if not ignore_errors:
raise CommandError(str(e))
errors.append(e)
continue
self.outf.write("Replicating DN %s\n" % dn)
local_samdb.transaction_start()
try:
repl.replicate(dn, source_dsa_invocation_id, destination_dsa_guid,
exop=drsuapi.DRSUAPI_EXOP_REPL_SECRET, rodc=True)
except Exception as e:
local_samdb.transaction_cancel()
if not ignore_errors:
raise CommandError("Error replicating DN %s" % dn)
errors.append(ReplicationError("Error replicating DN %s" % dn))
continue
local_samdb.transaction_commit()
if len(errors) > 0:
self.message("\nPreload encountered problematic users:")
for error in errors:
self.message(" %s" % error)
class cmd_rodc(SuperCommand):
"""Read-Only Domain Controller (RODC) management."""
subcommands = {}
subcommands["preload"] = cmd_rodc_preload()
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