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87afc3aee1
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
256 lines
11 KiB
Python
256 lines
11 KiB
Python
# DRS utility code
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#
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# Copyright Andrew Tridgell 2010
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# Copyright Andrew Bartlett 2010
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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from samba.dcerpc import drsuapi, misc
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from samba.net import Net
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import samba, ldb
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class drsException(Exception):
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"""Base element for drs errors"""
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def __init__(self, value):
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self.value = value
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def __str__(self):
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return "drsException: " + self.value
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def drsuapi_connect(server, lp, creds):
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"""Make a DRSUAPI connection to the server.
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:param server: the name of the server to connect to
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:param lp: a samba line parameter object
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:param creds: credential used for the connection
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:return: A tuple with the drsuapi bind object, the drsuapi handle
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and the supported extensions.
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:raise drsException: if the connection fails
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"""
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binding_options = "seal"
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if int(lp.get("log level")) >= 5:
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binding_options += ",print"
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binding_string = "ncacn_ip_tcp:%s[%s]" % (server, binding_options)
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try:
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drsuapiBind = drsuapi.drsuapi(binding_string, lp, creds)
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(drsuapiHandle, bindSupportedExtensions) = drs_DsBind(drsuapiBind)
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except Exception, e:
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raise drsException("DRS connection to %s failed: %s" % (server, e))
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return (drsuapiBind, drsuapiHandle, bindSupportedExtensions)
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def sendDsReplicaSync(drsuapiBind, drsuapi_handle, source_dsa_guid,
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naming_context, req_option):
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"""Send DS replica sync request.
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:param drsuapiBind: a drsuapi Bind object
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:param drsuapi_handle: a drsuapi hanle on the drsuapi connection
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:param source_dsa_guid: the guid of the source dsa for the replication
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:param naming_context: the DN of the naming context to replicate
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:param req_options: replication options for the DsReplicaSync call
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:raise drsException: if any error occur while sending and receiving the
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reply for the dsReplicaSync
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"""
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nc = drsuapi.DsReplicaObjectIdentifier()
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nc.dn = naming_context
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req1 = drsuapi.DsReplicaSyncRequest1()
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req1.naming_context = nc;
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req1.options = req_option
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req1.source_dsa_guid = misc.GUID(source_dsa_guid)
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try:
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drsuapiBind.DsReplicaSync(drsuapi_handle, 1, req1)
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except Exception, estr:
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raise drsException("DsReplicaSync failed %s" % estr)
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def sendRemoveDsServer(drsuapiBind, drsuapi_handle, server_dsa_dn, domain):
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"""Send RemoveDSServer request.
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:param drsuapiBind: a drsuapi Bind object
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:param drsuapi_handle: a drsuapi hanle on the drsuapi connection
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:param server_dsa_dn: a DN object of the server's dsa that we want to
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demote
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:param domain: a DN object of the server's domain
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:raise drsException: if any error occur while sending and receiving the
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reply for the DsRemoveDSServer
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"""
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try:
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req1 = drsuapi.DsRemoveDSServerRequest1()
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req1.server_dn = str(server_dsa_dn)
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req1.domain_dn = str(domain)
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req1.commit = 1
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drsuapiBind.DsRemoveDSServer(drsuapi_handle, 1, req1)
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except Exception, estr:
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raise drsException("DsRemoveDSServer failed %s" % estr)
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def drs_DsBind(drs):
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'''make a DsBind call, returning the binding handle'''
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bind_info = drsuapi.DsBindInfoCtr()
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bind_info.length = 28
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bind_info.info = drsuapi.DsBindInfo28()
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_BASE
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ASYNC_REPLICATION
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_REMOVEAPI
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_MOVEREQ_V2
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHG_COMPRESS
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V1
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_RESTORE_USN_OPTIMIZATION
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_KCC_EXECUTE
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADDENTRY_V2
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_LINKED_VALUE_REPLICATION
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V2
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_INSTANCE_TYPE_NOT_REQ_ON_MOD
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_CRYPTO_BIND
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GET_REPL_INFO
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_STRONG_ENCRYPTION
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V01
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_TRANSITIVE_MEMBERSHIP
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADD_SID_HISTORY
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_POST_BETA3
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GET_MEMBERSHIPS2
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V6
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_NONDOMAIN_NCS
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V8
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V5
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V6
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADDENTRYREPLY_V3
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V7
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_VERIFY_OBJECT
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(info, handle) = drs.DsBind(misc.GUID(drsuapi.DRSUAPI_DS_BIND_GUID), bind_info)
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return (handle, info.info.supported_extensions)
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class drs_Replicate(object):
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'''DRS replication calls'''
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def __init__(self, binding_string, lp, creds, samdb):
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self.drs = drsuapi.drsuapi(binding_string, lp, creds)
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(self.drs_handle, self.supported_extensions) = drs_DsBind(self.drs)
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self.net = Net(creds=creds, lp=lp)
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self.samdb = samdb
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self.replication_state = self.net.replicate_init(self.samdb, lp, self.drs)
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def drs_get_rodc_partial_attribute_set(self):
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'''get a list of attributes for RODC replication'''
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partial_attribute_set = drsuapi.DsPartialAttributeSet()
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partial_attribute_set.version = 1
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attids = []
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# the exact list of attids we send is quite critical. Note that
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# we do ask for the secret attributes, but set SPECIAL_SECRET_PROCESSING
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# to zero them out
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schema_dn = self.samdb.get_schema_basedn()
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res = self.samdb.search(base=schema_dn, scope=ldb.SCOPE_SUBTREE,
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expression="objectClass=attributeSchema",
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attrs=["lDAPDisplayName", "systemFlags",
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"searchFlags"])
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for r in res:
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ldap_display_name = r["lDAPDisplayName"][0]
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if "systemFlags" in r:
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system_flags = r["systemFlags"][0]
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if (int(system_flags) & (samba.dsdb.DS_FLAG_ATTR_NOT_REPLICATED |
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samba.dsdb.DS_FLAG_ATTR_IS_CONSTRUCTED)):
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continue
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if "searchFlags" in r:
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search_flags = r["searchFlags"][0]
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if (int(search_flags) & samba.dsdb.SEARCH_FLAG_RODC_ATTRIBUTE):
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continue
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attid = self.samdb.get_attid_from_lDAPDisplayName(ldap_display_name)
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attids.append(int(attid))
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# the attids do need to be sorted, or windows doesn't return
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# all the attributes we need
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attids.sort()
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partial_attribute_set.attids = attids
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partial_attribute_set.num_attids = len(attids)
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return partial_attribute_set
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def replicate(self, dn, source_dsa_invocation_id, destination_dsa_guid,
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schema=False, exop=drsuapi.DRSUAPI_EXOP_NONE, rodc=False,
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replica_flags=None):
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'''replicate a single DN'''
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# setup for a GetNCChanges call
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req8 = drsuapi.DsGetNCChangesRequest8()
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req8.destination_dsa_guid = destination_dsa_guid
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req8.source_dsa_invocation_id = source_dsa_invocation_id
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req8.naming_context = drsuapi.DsReplicaObjectIdentifier()
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req8.naming_context.dn = dn
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req8.highwatermark = drsuapi.DsReplicaHighWaterMark()
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req8.highwatermark.tmp_highest_usn = 0
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req8.highwatermark.reserved_usn = 0
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req8.highwatermark.highest_usn = 0
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req8.uptodateness_vector = None
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if replica_flags is not None:
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req8.replica_flags = replica_flags
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elif exop == drsuapi.DRSUAPI_EXOP_REPL_SECRET:
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req8.replica_flags = 0
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else:
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req8.replica_flags = (drsuapi.DRSUAPI_DRS_INIT_SYNC |
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drsuapi.DRSUAPI_DRS_PER_SYNC |
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drsuapi.DRSUAPI_DRS_GET_ANC |
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drsuapi.DRSUAPI_DRS_NEVER_SYNCED)
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if rodc:
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req8.replica_flags |= drsuapi.DRSUAPI_DRS_SPECIAL_SECRET_PROCESSING
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else:
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req8.replica_flags |= drsuapi.DRSUAPI_DRS_WRIT_REP
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req8.max_object_count = 402
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req8.max_ndr_size = 402116
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req8.extended_op = exop
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req8.fsmo_info = 0
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req8.partial_attribute_set = None
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req8.partial_attribute_set_ex = None
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req8.mapping_ctr.num_mappings = 0
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req8.mapping_ctr.mappings = None
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if not schema and rodc:
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req8.partial_attribute_set = self.drs_get_rodc_partial_attribute_set()
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if self.supported_extensions & drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V8:
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req_level = 8
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req = req8
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else:
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req_level = 5
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req5 = drsuapi.DsGetNCChangesRequest5()
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for a in dir(req5):
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if a[0] != '_':
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setattr(req5, a, getattr(req8, a))
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req = req5
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while True:
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(level, ctr) = self.drs.DsGetNCChanges(self.drs_handle, req_level, req)
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if ctr.first_object is None and ctr.object_count != 0:
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raise RuntimeError("DsGetNCChanges: NULL first_object with object_count=%u" % (ctr.object_count))
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self.net.replicate_chunk(self.replication_state, level, ctr,
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schema=schema, req_level=req_level, req=req)
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if ctr.more_data == 0:
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break
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req.highwatermark = ctr.new_highwatermark
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