Move python modules from source4/scripting/python/ to python/.

Reviewed-by: Andrew Bartlett <abartlet@samba.org>

Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Sat Mar  2 03:57:34 CET 2013 on sn-devel-104

python/samba/netcmd/drs.py

@@ -0,0 +1,510 @@
+# implement samba_tool drs commands
+#
+# Copyright Andrew Tridgell 2010
+#
+# based on C implementation by Kamen Mazdrashki <kamen.mazdrashki@postpath.com>
+#
+# 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 samba.getopt as options
+import ldb
+
+from samba.auth import system_session
+from samba.netcmd import (
+    Command,
+    CommandError,
+    Option,
+    SuperCommand,
+    )
+from samba.samdb import SamDB
+from samba import drs_utils, nttime2string, dsdb
+from samba.dcerpc import drsuapi, misc
+import common
+
+def drsuapi_connect(ctx):
+    '''make a DRSUAPI connection to the server'''
+    try:
+        (ctx.drsuapi, ctx.drsuapi_handle, ctx.bind_supported_extensions) = drs_utils.drsuapi_connect(ctx.server, ctx.lp, ctx.creds)
+    except Exception, e:
+        raise CommandError("DRS connection to %s failed" % ctx.server, e)
+
+def samdb_connect(ctx):
+    '''make a ldap connection to the server'''
+    try:
+        ctx.samdb = SamDB(url="ldap://%s" % ctx.server,
+                          session_info=system_session(),
+                          credentials=ctx.creds, lp=ctx.lp)
+    except Exception, e:
+        raise CommandError("LDAP connection to %s failed" % ctx.server, e)
+
+def drs_errmsg(werr):
+    '''return "was successful" or an error string'''
+    (ecode, estring) = werr
+    if ecode == 0:
+        return "was successful"
+    return "failed, result %u (%s)" % (ecode, estring)
+
+
+
+def attr_default(msg, attrname, default):
+    '''get an attribute from a ldap msg with a default'''
+    if attrname in msg:
+        return msg[attrname][0]
+    return default
+
+
+
+def drs_parse_ntds_dn(ntds_dn):
+    '''parse a NTDS DN returning a site and server'''
+    a = ntds_dn.split(',')
+    if a[0] != "CN=NTDS Settings" or a[2] != "CN=Servers" or a[4] != 'CN=Sites':
+        raise RuntimeError("bad NTDS DN %s" % ntds_dn)
+    server = a[1].split('=')[1]
+    site   = a[3].split('=')[1]
+    return (site, server)
+
+
+
+
+
+class cmd_drs_showrepl(Command):
+    """Show replication status."""
+
+    synopsis = "%prog [<DC>] [options]"
+
+    takes_optiongroups = {
+        "sambaopts": options.SambaOptions,
+        "versionopts": options.VersionOptions,
+        "credopts": options.CredentialsOptions,
+    }
+
+    takes_args = ["DC?"]
+
+    def print_neighbour(self, n):
+        '''print one set of neighbour information'''
+        self.message("%s" % n.naming_context_dn)
+        try:
+            (site, server) = drs_parse_ntds_dn(n.source_dsa_obj_dn)
+            self.message("\t%s\%s via RPC" % (site, server))
+        except RuntimeError:
+            self.message("\tNTDS DN: %s" % n.source_dsa_obj_dn)
+        self.message("\t\tDSA object GUID: %s" % n.source_dsa_obj_guid)
+        self.message("\t\tLast attempt @ %s %s" % (nttime2string(n.last_attempt),
+                                                   drs_errmsg(n.result_last_attempt)))
+        self.message("\t\t%u consecutive failure(s)." % n.consecutive_sync_failures)
+        self.message("\t\tLast success @ %s" % nttime2string(n.last_success))
+        self.message("")
+
+    def drsuapi_ReplicaInfo(ctx, info_type):
+        '''call a DsReplicaInfo'''
+
+        req1 = drsuapi.DsReplicaGetInfoRequest1()
+        req1.info_type = info_type
+        try:
+            (info_type, info) = ctx.drsuapi.DsReplicaGetInfo(ctx.drsuapi_handle, 1, req1)
+        except Exception, e:
+            raise CommandError("DsReplicaGetInfo of type %u failed" % info_type, e)
+        return (info_type, info)
+
+    def run(self, DC=None, sambaopts=None,
+            credopts=None, versionopts=None, server=None):
+
+        self.lp = sambaopts.get_loadparm()
+        if DC is None:
+            DC = common.netcmd_dnsname(self.lp)
+        self.server = DC
+        self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
+
+        drsuapi_connect(self)
+        samdb_connect(self)
+
+        # show domain information
+        ntds_dn = self.samdb.get_dsServiceName()
+        server_dns = self.samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["dnsHostName"])[0]['dnsHostName'][0]
+
+        (site, server) = drs_parse_ntds_dn(ntds_dn)
+        try:
+            ntds = self.samdb.search(base=ntds_dn, scope=ldb.SCOPE_BASE, attrs=['options', 'objectGUID', 'invocationId'])
+        except Exception, e:
+            raise CommandError("Failed to search NTDS DN %s" % ntds_dn)
+        conn = self.samdb.search(base=ntds_dn, expression="(objectClass=nTDSConnection)")
+
+        self.message("%s\\%s" % (site, server))
+        self.message("DSA Options: 0x%08x" % int(attr_default(ntds[0], "options", 0)))
+        self.message("DSA object GUID: %s" % self.samdb.schema_format_value("objectGUID", ntds[0]["objectGUID"][0]))
+        self.message("DSA invocationId: %s\n" % self.samdb.schema_format_value("objectGUID", ntds[0]["invocationId"][0]))
+
+        self.message("==== INBOUND NEIGHBORS ====\n")
+        (info_type, info) = self.drsuapi_ReplicaInfo(drsuapi.DRSUAPI_DS_REPLICA_INFO_NEIGHBORS)
+        for n in info.array:
+            self.print_neighbour(n)
+
+
+        self.message("==== OUTBOUND NEIGHBORS ====\n")
+        (info_type, info) = self.drsuapi_ReplicaInfo(drsuapi.DRSUAPI_DS_REPLICA_INFO_REPSTO)
+        for n in info.array:
+            self.print_neighbour(n)
+
+        reasons = ['NTDSCONN_KCC_GC_TOPOLOGY',
+                   'NTDSCONN_KCC_RING_TOPOLOGY',
+                   'NTDSCONN_KCC_MINIMIZE_HOPS_TOPOLOGY',
+                   'NTDSCONN_KCC_STALE_SERVERS_TOPOLOGY',
+                   'NTDSCONN_KCC_OSCILLATING_CONNECTION_TOPOLOGY',
+                   'NTDSCONN_KCC_INTERSITE_GC_TOPOLOGY',
+                   'NTDSCONN_KCC_INTERSITE_TOPOLOGY',
+                   'NTDSCONN_KCC_SERVER_FAILOVER_TOPOLOGY',
+                   'NTDSCONN_KCC_SITE_FAILOVER_TOPOLOGY',
+                   'NTDSCONN_KCC_REDUNDANT_SERVER_TOPOLOGY']
+
+        self.message("==== KCC CONNECTION OBJECTS ====\n")
+        for c in conn:
+            c_rdn, sep, c_server_dn = c['fromServer'][0].partition(',')
+            c_server_res = self.samdb.search(base=c_server_dn, scope=ldb.SCOPE_BASE, attrs=["dnsHostName"])
+            c_server_dns = c_server_res[0]["dnsHostName"][0]
+            self.message("Connection --")
+            self.message("\tConnection name: %s" % c['name'][0])
+            self.message("\tEnabled        : %s" % attr_default(c, 'enabledConnection', 'TRUE'))
+            self.message("\tServer DNS name : %s" % c_server_dns)
+            self.message("\tServer DN name  : %s" % c['fromServer'][0])
+            self.message("\t\tTransportType: RPC")
+            self.message("\t\toptions: 0x%08X" % int(attr_default(c, 'options', 0)))
+            if not 'mS-DS-ReplicatesNCReason' in c:
+                self.message("Warning: No NC replicated for Connection!")
+                continue
+            for r in c['mS-DS-ReplicatesNCReason']:
+                a = str(r).split(':')
+                self.message("\t\tReplicatesNC: %s" % a[3])
+                self.message("\t\tReason: 0x%08x" % int(a[2]))
+                for s in reasons:
+                    if getattr(dsdb, s, 0) & int(a[2]):
+                        self.message("\t\t\t%s" % s)
+
+
+
+class cmd_drs_kcc(Command):
+    """Trigger knowledge consistency center run."""
+
+    synopsis = "%prog [<DC>] [options]"
+
+    takes_optiongroups = {
+        "sambaopts": options.SambaOptions,
+        "versionopts": options.VersionOptions,
+        "credopts": options.CredentialsOptions,
+    }
+
+    takes_args = ["DC?"]
+
+    def run(self, DC=None, sambaopts=None,
+            credopts=None, versionopts=None, server=None):
+
+        self.lp = sambaopts.get_loadparm()
+        if DC is None:
+            DC = common.netcmd_dnsname(self.lp)
+        self.server = DC
+
+        self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
+
+        drsuapi_connect(self)
+
+        req1 = drsuapi.DsExecuteKCC1()
+        try:
+            self.drsuapi.DsExecuteKCC(self.drsuapi_handle, 1, req1)
+        except Exception, e:
+            raise CommandError("DsExecuteKCC failed", e)
+        self.message("Consistency check on %s successful." % DC)
+
+
+
+def drs_local_replicate(self, SOURCE_DC, NC):
+    '''replicate from a source DC to the local SAM'''
+
+    self.server = SOURCE_DC
+    drsuapi_connect(self)
+
+    self.local_samdb = SamDB(session_info=system_session(), url=None,
+                             credentials=self.creds, lp=self.lp)
+
+    self.samdb = SamDB(url="ldap://%s" % self.server,
+                       session_info=system_session(),
+                       credentials=self.creds, lp=self.lp)
+
+    # work out the source and destination GUIDs
+    res = self.local_samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["dsServiceName"])
+    self.ntds_dn = res[0]["dsServiceName"][0]
+
+    res = self.local_samdb.search(base=self.ntds_dn, scope=ldb.SCOPE_BASE, attrs=["objectGUID"])
+    self.ntds_guid = misc.GUID(self.samdb.schema_format_value("objectGUID", res[0]["objectGUID"][0]))
+
+
+    source_dsa_invocation_id = misc.GUID(self.samdb.get_invocation_id())
+    destination_dsa_guid = self.ntds_guid
+
+    self.samdb.transaction_start()
+    repl = drs_utils.drs_Replicate("ncacn_ip_tcp:%s[seal]" % self.server, self.lp,
+                                   self.creds, self.local_samdb)
+    try:
+        repl.replicate(NC, source_dsa_invocation_id, destination_dsa_guid)
+    except Exception, e:
+        raise CommandError("Error replicating DN %s" % NC, e)
+    self.samdb.transaction_commit()
+
+
+
+class cmd_drs_replicate(Command):
+    """Replicate a naming context between two DCs."""
+
+    synopsis = "%prog <destinationDC> <sourceDC> <NC> [options]"
+
+    takes_optiongroups = {
+        "sambaopts": options.SambaOptions,
+        "versionopts": options.VersionOptions,
+        "credopts": options.CredentialsOptions,
+    }
+
+    takes_args = ["DEST_DC", "SOURCE_DC", "NC"]
+
+    takes_options = [
+        Option("--add-ref", help="use ADD_REF to add to repsTo on source", action="store_true"),
+        Option("--sync-forced", help="use SYNC_FORCED to force inbound replication", action="store_true"),
+        Option("--sync-all", help="use SYNC_ALL to replicate from all DCs", action="store_true"),
+        Option("--full-sync", help="resync all objects", action="store_true"),
+        Option("--local", help="pull changes directly into the local database (destination DC is ignored)", action="store_true"),
+        ]
+
+    def run(self, DEST_DC, SOURCE_DC, NC,
+            add_ref=False, sync_forced=False, sync_all=False, full_sync=False,
+            local=False, sambaopts=None, credopts=None, versionopts=None, server=None):
+
+        self.server = DEST_DC
+        self.lp = sambaopts.get_loadparm()
+
+        self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
+
+        if local:
+            drs_local_replicate(self, SOURCE_DC, NC)
+            return
+
+        drsuapi_connect(self)
+        samdb_connect(self)
+
+        # we need to find the NTDS GUID of the source DC
+        msg = self.samdb.search(base=self.samdb.get_config_basedn(),
+                                expression="(&(objectCategory=server)(|(name=%s)(dNSHostName=%s)))" % (
+            ldb.binary_encode(SOURCE_DC),
+            ldb.binary_encode(SOURCE_DC)),
+                                attrs=[])
+        if len(msg) == 0:
+            raise CommandError("Failed to find source DC %s" % SOURCE_DC)
+        server_dn = msg[0]['dn']
+
+        msg = self.samdb.search(base=server_dn, scope=ldb.SCOPE_ONELEVEL,
+                                expression="(|(objectCategory=nTDSDSA)(objectCategory=nTDSDSARO))",
+                                attrs=['objectGUID', 'options'])
+        if len(msg) == 0:
+            raise CommandError("Failed to find source NTDS DN %s" % SOURCE_DC)
+        source_dsa_guid = msg[0]['objectGUID'][0]
+        dsa_options = int(attr_default(msg, 'options', 0))
+
+
+        req_options = 0
+        if not (dsa_options & dsdb.DS_NTDSDSA_OPT_DISABLE_OUTBOUND_REPL):
+            req_options |= drsuapi.DRSUAPI_DRS_WRIT_REP
+        if add_ref:
+            req_options |= drsuapi.DRSUAPI_DRS_ADD_REF
+        if sync_forced:
+            req_options |= drsuapi.DRSUAPI_DRS_SYNC_FORCED
+        if sync_all:
+            req_options |= drsuapi.DRSUAPI_DRS_SYNC_ALL
+        if full_sync:
+            req_options |= drsuapi.DRSUAPI_DRS_FULL_SYNC_NOW
+
+        try:
+            drs_utils.sendDsReplicaSync(self.drsuapi, self.drsuapi_handle, source_dsa_guid, NC, req_options)
+        except drs_utils.drsException, estr:
+            raise CommandError("DsReplicaSync failed", estr)
+        self.message("Replicate from %s to %s was successful." % (SOURCE_DC, DEST_DC))
+
+
+
+class cmd_drs_bind(Command):
+    """Show DRS capabilities of a server."""
+
+    synopsis = "%prog [<DC>] [options]"
+
+    takes_optiongroups = {
+        "sambaopts": options.SambaOptions,
+        "versionopts": options.VersionOptions,
+        "credopts": options.CredentialsOptions,
+    }
+
+    takes_args = ["DC?"]
+
+    def run(self, DC=None, sambaopts=None,
+            credopts=None, versionopts=None, server=None):
+
+        self.lp = sambaopts.get_loadparm()
+        if DC is None:
+            DC = common.netcmd_dnsname(self.lp)
+        self.server = DC
+        self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
+
+        drsuapi_connect(self)
+
+        bind_info = drsuapi.DsBindInfoCtr()
+        bind_info.length = 28
+        bind_info.info = drsuapi.DsBindInfo28()
+        (info, handle) = self.drsuapi.DsBind(misc.GUID(drsuapi.DRSUAPI_DS_BIND_GUID), bind_info)
+
+        optmap = [
+            ("DRSUAPI_SUPPORTED_EXTENSION_BASE",     "DRS_EXT_BASE"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_ASYNC_REPLICATION",   "DRS_EXT_ASYNCREPL"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_REMOVEAPI",    "DRS_EXT_REMOVEAPI"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_MOVEREQ_V2",   "DRS_EXT_MOVEREQ_V2"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_GETCHG_COMPRESS",   "DRS_EXT_GETCHG_DEFLATE"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V1",    "DRS_EXT_DCINFO_V1"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_RESTORE_USN_OPTIMIZATION",   "DRS_EXT_RESTORE_USN_OPTIMIZATION"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_ADDENTRY",    "DRS_EXT_ADDENTRY"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_KCC_EXECUTE",   "DRS_EXT_KCC_EXECUTE"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_ADDENTRY_V2",   "DRS_EXT_ADDENTRY_V2"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_LINKED_VALUE_REPLICATION",   "DRS_EXT_LINKED_VALUE_REPLICATION"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V2",    "DRS_EXT_DCINFO_V2"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_INSTANCE_TYPE_NOT_REQ_ON_MOD","DRS_EXT_INSTANCE_TYPE_NOT_REQ_ON_MOD"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_CRYPTO_BIND",   "DRS_EXT_CRYPTO_BIND"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_GET_REPL_INFO",   "DRS_EXT_GET_REPL_INFO"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_STRONG_ENCRYPTION",   "DRS_EXT_STRONG_ENCRYPTION"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V01",   "DRS_EXT_DCINFO_VFFFFFFFF"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_TRANSITIVE_MEMBERSHIP",  "DRS_EXT_TRANSITIVE_MEMBERSHIP"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_ADD_SID_HISTORY",   "DRS_EXT_ADD_SID_HISTORY"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_POST_BETA3",   "DRS_EXT_POST_BETA3"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V5",   "DRS_EXT_GETCHGREQ_V5"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_GET_MEMBERSHIPS2",   "DRS_EXT_GETMEMBERSHIPS2"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V6",   "DRS_EXT_GETCHGREQ_V6"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_NONDOMAIN_NCS",   "DRS_EXT_NONDOMAIN_NCS"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V8",   "DRS_EXT_GETCHGREQ_V8"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V5",   "DRS_EXT_GETCHGREPLY_V5"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V6",   "DRS_EXT_GETCHGREPLY_V6"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_ADDENTRYREPLY_V3",   "DRS_EXT_WHISTLER_BETA3"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V7",   "DRS_EXT_WHISTLER_BETA3"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_VERIFY_OBJECT",   "DRS_EXT_WHISTLER_BETA3"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_XPRESS_COMPRESS",   "DRS_EXT_W2K3_DEFLATE"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V10",   "DRS_EXT_GETCHGREQ_V10"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_RESERVED_PART2",   "DRS_EXT_RESERVED_FOR_WIN2K_OR_DOTNET_PART2"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_RESERVED_PART3", "DRS_EXT_RESERVED_FOR_WIN2K_OR_DOTNET_PART3")
+            ]
+
+        optmap_ext = [
+            ("DRSUAPI_SUPPORTED_EXTENSION_ADAM", "DRS_EXT_ADAM"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_LH_BETA2", "DRS_EXT_LH_BETA2"),
+            ("DRSUAPI_SUPPORTED_EXTENSION_RECYCLE_BIN", "DRS_EXT_RECYCLE_BIN")]
+
+        self.message("Bind to %s succeeded." % DC)
+        self.message("Extensions supported:")
+        for (opt, str) in optmap:
+            optval = getattr(drsuapi, opt, 0)
+            if info.info.supported_extensions & optval:
+                yesno = "Yes"
+            else:
+                yesno = "No "
+            self.message("  %-60s: %s (%s)" % (opt, yesno, str))
+
+        if isinstance(info.info, drsuapi.DsBindInfo48):
+            self.message("\nExtended Extensions supported:")
+            for (opt, str) in optmap_ext:
+                optval = getattr(drsuapi, opt, 0)
+                if info.info.supported_extensions_ext & optval:
+                    yesno = "Yes"
+                else:
+                    yesno = "No "
+                self.message("  %-60s: %s (%s)" % (opt, yesno, str))
+
+        self.message("\nSite GUID: %s" % info.info.site_guid)
+        self.message("Repl epoch: %u" % info.info.repl_epoch)
+        if isinstance(info.info, drsuapi.DsBindInfo48):
+            self.message("Forest GUID: %s" % info.info.config_dn_guid)
+
+
+
+class cmd_drs_options(Command):
+    """Query or change 'options' for NTDS Settings object of a Domain Controller."""
+
+    synopsis = "%prog [<DC>] [options]"
+
+    takes_optiongroups = {
+        "sambaopts": options.SambaOptions,
+        "versionopts": options.VersionOptions,
+        "credopts": options.CredentialsOptions,
+    }
+
+    takes_args = ["DC?"]
+
+    takes_options = [
+        Option("--dsa-option", help="DSA option to enable/disable", type="str",
+               metavar="{+|-}IS_GC | {+|-}DISABLE_INBOUND_REPL | {+|-}DISABLE_OUTBOUND_REPL | {+|-}DISABLE_NTDSCONN_XLATE" ),
+        ]
+
+    option_map = {"IS_GC": 0x00000001,
+                  "DISABLE_INBOUND_REPL": 0x00000002,
+                  "DISABLE_OUTBOUND_REPL": 0x00000004,
+                  "DISABLE_NTDSCONN_XLATE": 0x00000008}
+
+    def run(self, DC=None, dsa_option=None,
+            sambaopts=None, credopts=None, versionopts=None):
+
+        self.lp = sambaopts.get_loadparm()
+        if DC is None:
+            DC = common.netcmd_dnsname(self.lp)
+        self.server = DC
+        self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
+
+        samdb_connect(self)
+
+        ntds_dn = self.samdb.get_dsServiceName()
+        res = self.samdb.search(base=ntds_dn, scope=ldb.SCOPE_BASE, attrs=["options"])
+        dsa_opts = int(res[0]["options"][0])
+
+        # print out current DSA options
+        cur_opts = [x for x in self.option_map if self.option_map[x] & dsa_opts]
+        self.message("Current DSA options: " + ", ".join(cur_opts))
+
+        # modify options
+        if dsa_option:
+            if dsa_option[:1] not in ("+", "-"):
+                raise CommandError("Unknown option %s" % dsa_option)
+            flag = dsa_option[1:]
+            if flag not in self.option_map.keys():
+                raise CommandError("Unknown option %s" % dsa_option)
+            if dsa_option[:1] == "+":
+                dsa_opts |= self.option_map[flag]
+            else:
+                dsa_opts &= ~self.option_map[flag]
+            #save new options
+            m = ldb.Message()
+            m.dn = ldb.Dn(self.samdb, ntds_dn)
+            m["options"]= ldb.MessageElement(str(dsa_opts), ldb.FLAG_MOD_REPLACE, "options")
+            self.samdb.modify(m)
+            # print out new DSA options
+            cur_opts = [x for x in self.option_map if self.option_map[x] & dsa_opts]
+            self.message("New DSA options: " + ", ".join(cur_opts))
+
+
+class cmd_drs(SuperCommand):
+    """Directory Replication Services (DRS) management."""
+
+    subcommands = {}
+    subcommands["bind"] = cmd_drs_bind()
+    subcommands["kcc"] = cmd_drs_kcc()
+    subcommands["replicate"] = cmd_drs_replicate()
+    subcommands["showrepl"] = cmd_drs_showrepl()
+    subcommands["options"] = cmd_drs_options()