#!/usr/bin/env python

# script to call a DRS GetNCChanges from the command line
# this is useful for plugfest testing

import sys
from optparse import OptionParser

sys.path.insert(0, "bin/python")

import samba
import samba.getopt as options
from samba.dcerpc import drsuapi, misc
from samba.samdb import SamDB
from samba.auth import system_session

def do_DsBind(drs):
    '''make a DsBind call, returning the binding handle'''
    bind_info = drsuapi.DsBindInfoCtr()
    bind_info.length = 28
    bind_info.info = drsuapi.DsBindInfo28()
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_BASE
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ASYNC_REPLICATION
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_REMOVEAPI
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_MOVEREQ_V2
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHG_COMPRESS
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V1
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_RESTORE_USN_OPTIMIZATION
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_KCC_EXECUTE
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADDENTRY_V2
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_LINKED_VALUE_REPLICATION
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V2
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_INSTANCE_TYPE_NOT_REQ_ON_MOD
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_CRYPTO_BIND
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GET_REPL_INFO
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_STRONG_ENCRYPTION
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V01
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_TRANSITIVE_MEMBERSHIP
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADD_SID_HISTORY
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_POST_BETA3
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GET_MEMBERSHIPS2
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V6
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_NONDOMAIN_NCS
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V8
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V5
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V6
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADDENTRYREPLY_V3
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V7
    bind_info.info.supported_extensions	|= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_VERIFY_OBJECT
    (info, handle) = drs.DsBind(misc.GUID(drsuapi.DRSUAPI_DS_BIND_GUID), bind_info)
    return handle

########### main code ###########
if __name__ == "__main__":
    parser = OptionParser("getncchanges [options] server")
    sambaopts = options.SambaOptions(parser)
    parser.add_option_group(sambaopts)
    credopts = options.CredentialsOptionsDouble(parser)
    parser.add_option_group(credopts)

    parser.add_option("", "--dn", dest="dn", help="DN to replicate",)
    parser.add_option("", "--exop", dest="exop", help="extended operation",)

    (opts, args) = parser.parse_args()

    lp = sambaopts.get_loadparm()
    creds = credopts.get_credentials(lp)

    if len(args) != 1:
        parser.error("You must supply a server")

    if creds.is_anonymous():
        parser.error("You must supply credentials")

    server = args[0]

    binding_str = "ncacn_ip_tcp:%s[seal,print]" % server

    drs = drsuapi.drsuapi(binding_str, lp, creds)
    drs_handle = do_DsBind(drs)
    print "DRS Handle: %s" % drs_handle

    req8 = drsuapi.DsGetNCChangesRequest8()

    samdb = SamDB(url="ldap://%s" % server,
                  session_info=system_session(),
                  credentials=creds, lp=lp)

    if opts.dn is None:
        opts.dn = str(samdb.get_default_basedn())

    if opts.exop is None:
        exop = drsuapi.DRSUAPI_EXOP_NONE
    else:
        exop = int(opts.exop)

    null_guid = misc.GUID()
    req8.destination_dsa_guid               = misc.GUID("9c637462-5b8c-4467-aef2-bdb1f57bc4ef")
    req8.source_dsa_invocation_id	    = misc.GUID(samdb.get_invocation_id())
    req8.naming_context			    = drsuapi.DsReplicaObjectIdentifier()
    req8.naming_context.dn                  = opts.dn.decode("utf-8")
    req8.highwatermark                      = drsuapi.DsReplicaHighWaterMark()
    req8.highwatermark.tmp_highest_usn	    = 0
    req8.highwatermark.reserved_usn	    = 0
    req8.highwatermark.highest_usn	    = 0
    req8.uptodateness_vector		    = None
    req8.replica_flags			    = 0
    req8.replica_flags			    |=  (drsuapi.DRSUAPI_DRS_INIT_SYNC |
                                                 drsuapi.DRSUAPI_DRS_PER_SYNC |
                                                 drsuapi.DRSUAPI_DRS_GET_ANC |
                                                 drsuapi.DRSUAPI_DRS_NEVER_SYNCED)
    req8.max_object_count		     = 402
    req8.max_ndr_size			     = 402116
    req8.extended_op			     = exop
    req8.fsmo_info			     = 0
    req8.partial_attribute_set		     = None
    req8.partial_attribute_set_ex	     = None
    req8.mapping_ctr.num_mappings	     = 0
    req8.mapping_ctr.mappings		     = None

    drs.DsGetNCChanges(drs_handle, 8, req8)